Erro ao tentar iniciar Jetty

Bom dia,

Eu tenho um projeto que está dentro de uma maquina linux rodando com o jetty. Ele estava funcionando normal, porém depois da tarde de ontem, ele começou a dar o seguinte erro quanto tento iniciar o jetty

290 [main] INFO org.mortbay.log - jetty-6.1.24
319 [main] INFO org.mortbay.log - Deploy /etc/jetty/contexts/javadoc.xml -> org.mortbay.jetty.handler.ContextHandler@3882764b{/javadoc,file:/usr/share/jetty/javadoc}
355 [main] INFO org.mortbay.log - Extract file:/var/lib/jetty/webapps/arizona-upload-web.war to /var/cache/jetty/data/Jetty_192_168_0_87_8080_arizona.upload.web.war__arizona.upload.web__.gdlohx/webapp
2021 [main] INFO /arizona-upload-web - Initializing Spring root WebApplicationContext
2027 [main] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization started
2104 [main] INFO org.springframework.web.context.support.XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Wed Jul 06 10:12:54 BRT 2011]; root of context hierarchy
2221 [main] INFO org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [upload-applicationContext.xml]
2720 [main] INFO org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [validator-applicationContext.xml]
3038 [main] INFO org.springframework.beans.factory.config.PropertyPlaceholderConfigurer - Loading properties file from class path resource [upload.properties]
3086 [main] INFO org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@710ca208: defining beans [uploadHtmlController,uploadAppletController,uploadConfigDAOImpl,statusDAOImpl,arquivoDAOImpl,loteDAOImpl,arquivoService,uploadService,uploadConfigService,loteServiceImpl,statusServiceImpl,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,dataSource,messageSource,propertyConfigurer,sessionFactory,transactionManager,daoTxTemplate,arizonaValidator,validator,contextualMessageInterpolator]; root of factory hierarchy
3099 [main] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 1070 ms
3252 [main] WARN org.mortbay.log - EXCEPTION 
java.lang.ClassNotFoundException: org.eclipse.jetty.servlet.DefaultServlet
	at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
	at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:401)
	at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363)
	at org.mortbay.util.Loader.loadClass(Loader.java:91)
	at org.mortbay.util.Loader.loadClass(Loader.java:71)
	at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)
	at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:224)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.mortbay.start.Main.invokeMain(Main.java:194)
	at org.mortbay.start.Main.start(Main.java:534)
	at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
3397 [main] INFO /arizona-upload-web - Unavailable javax.servlet.UnavailableException: org.eclipse.jetty.servlet.DefaultServlet
3399 [main] WARN org.mortbay.log - failed arizona: java.lang.NullPointerException
3570 [main] INFO org.springframework.jdbc.datasource.DriverManagerDataSource - Loaded JDBC driver: net.sourceforge.jtds.jdbc.Driver
10:12:56,268  INFO Version:37 - Hibernate Commons Annotations 3.2.0.Final
10:12:56,275  INFO Environment:593 - Hibernate 3.6.2.Final
10:12:56,277  INFO Environment:626 - hibernate.properties not found
10:12:56,284  INFO Environment:804 - Bytecode provider name : javassist
10:12:56,287  INFO Environment:685 - using JDK 1.4 java.sql.Timestamp handling
10:12:56,341  INFO Configuration:2165 - configuring from url: jar:file:/var/cache/jetty/data/Jetty_192_168_0_87_8080_arizona.upload.web.war__arizona.upload.web__.gdlohx/webapp/WEB-INF/lib/arizona-upload.jar!/upload-hibernate.cfg.xml
10:12:56,363  WARN DTDEntityResolver:73 - recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide!
10:12:56,398  INFO Configuration:2270 - Configured SessionFactory: null
10:12:56,460  INFO AnnotationBinder:532 - Binding entity from annotated class: br.com.arizona.upload.model.entity.LoteEntity
10:12:56,496  INFO EntityBinder:530 - Bind entity br.com.arizona.upload.model.entity.LoteEntity on table UPL_LOTE
10:12:56,564  INFO AnnotationBinder:532 - Binding entity from annotated class: br.com.arizona.upload.model.entity.ArquivoEntity
10:12:56,569  INFO EntityBinder:530 - Bind entity br.com.arizona.upload.model.entity.ArquivoEntity on table UPL_ARQUIVO
10:12:56,581  INFO AnnotationBinder:532 - Binding entity from annotated class: br.com.arizona.upload.model.entity.StatusEntity
10:12:56,582  INFO EntityBinder:530 - Bind entity br.com.arizona.upload.model.entity.StatusEntity on table UPL_STATUS
10:12:56,584  INFO AnnotationBinder:532 - Binding entity from annotated class: br.com.arizona.upload.model.entity.UploadConfigEntity
10:12:56,585  INFO QueryBinder:86 - Binding Named query: findUploadConfigByHash => SELECT uc FROM br.com.arizona.upload.model.entity.UploadConfigEntity uc WHERE uc.hash = :hash
10:12:56,586  INFO EntityBinder:530 - Bind entity br.com.arizona.upload.model.entity.UploadConfigEntity on table UPL_CONFIG
10:12:56,594  INFO Configuration:1649 - Hibernate Validator not found: ignoring
4053 [main] INFO org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean - Building new Hibernate SessionFactory
10:12:56,681  INFO HibernateSearchEventListenerRegister:75 - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
10:12:56,685  INFO ConnectionProviderFactory:173 - Initializing connection provider: org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider
10:12:56,778  INFO SettingsFactory:117 - Database ->
       name : Microsoft SQL Server
    version : 10.00.4000
      major : 10
      minor : 0
10:12:56,779  INFO SettingsFactory:123 - Driver ->
       name : jTDS Type 4 JDBC Driver for MS SQL Server and Sybase
    version : 1.2.2
      major : 1
      minor : 2
10:12:56,795  INFO Dialect:135 - Using dialect: org.hibernate.dialect.SQLServerDialect
10:12:56,804  INFO JdbcSupportLoader:79 - Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
10:12:56,806  INFO TransactionFactoryFactory:62 - Transaction strategy: org.springframework.orm.hibernate3.SpringTransactionFactory
10:12:56,807  INFO TransactionManagerLookupFactory:80 - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
10:12:56,808  INFO SettingsFactory:179 - Automatic flush during beforeCompletion(): disabled
10:12:56,809  INFO SettingsFactory:183 - Automatic session close at end of transaction: disabled
10:12:56,814  INFO SettingsFactory:198 - Scrollable result sets: enabled
10:12:56,815  INFO SettingsFactory:206 - JDBC3 getGeneratedKeys(): enabled
10:12:56,817  INFO SettingsFactory:214 - Connection release mode: auto
10:12:56,820  INFO SettingsFactory:241 - Default batch fetch size: 1
10:12:56,821  INFO SettingsFactory:245 - Generate SQL with comments: disabled
10:12:56,822  INFO SettingsFactory:249 - Order SQL updates by primary key: disabled
10:12:56,824  INFO SettingsFactory:253 - Order SQL inserts for batching: disabled
10:12:56,825  INFO SettingsFactory:431 - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
10:12:56,828  INFO ASTQueryTranslatorFactory:47 - Using ASTQueryTranslatorFactory
10:12:56,829  INFO SettingsFactory:261 - Query language substitutions: {false='N', true='Y'}
10:12:56,829  INFO SettingsFactory:266 - JPA-QL strict compliance: disabled
10:12:56,832  INFO SettingsFactory:271 - Second-level cache: disabled
10:12:56,833  INFO SettingsFactory:275 - Query cache: disabled
10:12:56,833  INFO SettingsFactory:406 - Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
10:12:56,835  INFO SettingsFactory:285 - Optimize cache for minimal puts: disabled
10:12:56,835  INFO SettingsFactory:294 - Structured second-level cache entries: disabled
10:12:56,839  INFO SettingsFactory:323 - Statistics: disabled
10:12:56,840  INFO SettingsFactory:327 - Deleted entity synthetic identifier rollback: disabled
10:12:56,841  INFO SettingsFactory:343 - Default entity-mode: pojo
10:12:56,842  INFO SettingsFactory:347 - Named query checking : enabled
10:12:56,843  INFO SettingsFactory:351 - Check Nullability in Core (should be disabled when Bean Validation is on): disabled
10:12:56,862  INFO SessionFactoryImpl:202 - building session factory
10:12:56,866  INFO BasicTypeRegistry:150 - Type registration [clob] overrides previous : org.hibernate.type.ClobType@3429cf1
10:12:56,867  INFO BasicTypeRegistry:150 - Type registration [java.sql.Clob] overrides previous : org.hibernate.type.ClobType@3429cf1
10:12:56,868  INFO BasicTypeRegistry:150 - Type registration [wrapper_materialized_blob] overrides previous : org.hibernate.type.WrappedMaterializedBlobType@a4d93e3
10:12:56,868  INFO BasicTypeRegistry:150 - Type registration [characters_clob] overrides previous : org.hibernate.type.PrimitiveCharacterArrayClobType@6b28215d
10:12:56,869  INFO BasicTypeRegistry:150 - Type registration [materialized_clob] overrides previous : org.hibernate.type.MaterializedClobType@17a697a1
10:12:56,871  INFO BasicTypeRegistry:150 - Type registration [blob] overrides previous : org.hibernate.type.BlobType@55e1a0ee
10:12:56,872  INFO BasicTypeRegistry:150 - Type registration [java.sql.Blob] overrides previous : org.hibernate.type.BlobType@55e1a0ee
10:12:56,873  INFO BasicTypeRegistry:150 - Type registration [materialized_blob] overrides previous : org.hibernate.type.MaterializedBlobType@500c954e
10:12:56,873  INFO BasicTypeRegistry:150 - Type registration [wrapper_characters_clob] overrides previous : org.hibernate.type.CharacterArrayClobType@6a1e5cf0
10:12:57,068  INFO SessionFactoryObjectFactory:105 - Not binding factory to JNDI, no JNDI name configured
Jul 6, 2011 10:12:57 AM com.sun.jersey.api.core.WebAppResourceConfig init
INFO: Scanning for root resource and provider classes in the Web app resource paths:
  /WEB-INF/lib
  /WEB-INF/classes
Jul 6, 2011 10:12:59 AM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Root resource classes found:
  class br.com.arizona.upload.ws.UploadWS
Jul 6, 2011 10:12:59 AM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Jul 6, 2011 10:12:59 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.6-ea05 02/25/2011 03:25 PM'
7890 [main] ERROR org.mortbay.log - Failed startup of context org.mortbay.jetty.webapp.WebAppContext@371daf60{/arizona-upload-web,file:/var/lib/jetty/webapps/arizona-upload-web.war}
java.lang.NullPointerException
	at java.lang.Class.isAssignableFrom(Native Method)
	at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:224)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.mortbay.start.Main.invokeMain(Main.java:194)
	at org.mortbay.start.Main.start(Main.java:534)
	at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
8151 [main] INFO org.mortbay.log - Opened /mnt/disco88/servidor87/jetty/2011_07_06.request.log
8183 [main] INFO org.mortbay.log - Started SelectChannelConnector@192.168.0.87:8080

Quando tento acessar o meu projeto dá o erro

HTTP ERROR: 503

Alguém poderia me ajudar?

Obrigada

Aparentemente e o classico ClassNotFound. Ja checou isso?

java.lang.ClassNotFoundException: org.eclipse.jetty.servlet.DefaultServlet 

Ja o erro 503 e so a forma do http te informar que houve um erro.

[quote]503 Service Unavailable
The server is currently unavailable (because it is overloaded or down for maintenance).[2] Generally, this is a temporary state.[/quote]