Jsf + primefaces + maven + jetty

Pessoal,

Estou fazendo um projeto novo com o jsf 2 para testar a tecnologia e vi que para a versão 2, o primefaces era o mais indicado. Bem, estou tendo alguns problemas para utiliza-lo. eu uso o maven e o jetty como container web.

para rodar a aplicação eu executo o comando "mvn war:inplace jetty:run" como jetty configurado no pom.xml.

As versões que estou usando são:

<dependency>
   <groupId>org.primefaces</groupId>
   <artifactId>primefaces</artifactId>
   <version>2.2.M1</version>
</dependency>

<dependency>
   <groupId>com.sun.faces</groupId>
   <artifactId>jsf-api</artifactId>
   <version>2.1.0-b05</version>
</dependency>
<dependency>
   <groupId>com.sun.faces</groupId>
   <artifactId>jsf-impl</artifactId>
   <version>2.1.0-b05</version>
</dependency>

configuração do plugin do jetty:

<plugin>
				<groupId>org.mortbay.jetty</groupId>
				<artifactId>maven-jetty-plugin</artifactId>
				<version>6.1.16</version>
				<configuration>
					<scanIntervalSeconds>5</scanIntervalSeconds>
					<!-- Configure the webapp -->
					<contextPath>/</contextPath>
					<tmpDir>target/not/necessary</tmpDir>
					<connectors>
						<connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
							<port>80</port>
							<maxIdleTime>60000</maxIdleTime>
						</connector>
					</connectors>
					<requestLog implementation="org.mortbay.jetty.NCSARequestLog">
						<filename>target/yyyy_mm_dd.request.log</filename>
						<retainDays>90</retainDays>
						<append>true</append>
						<extended>false</extended>
						<logTimeZone>GMT</logTimeZone>
					</requestLog>
				</configuration>
			</plugin>

e sempre que levanto a aplicação apresenta o erro....

2010-10-13 22:39:25.390::WARN:  Failed startup of context org.mortbay.jetty.plugin.Jetty6PluginWebAppContext@1a3bc8c{/,E:\work-helios\xxx\src\main\webapp}
com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! No Function Found on type: org.primefaces.util.ComponentUtils with signature: java.lang.String getWidgetVar(java.lang.String)
	at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:354)
	at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:223)
	at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1239)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:466)
	at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:124)
	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:222)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132)
	at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:441)
	at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383)
	at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
	at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:105)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:577)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:324)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:247)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:104)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:427)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:157)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:121)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: java.lang.Exception: No Function Found on type: org.primefaces.util.ComponentUtils with signature: java.lang.String getWidgetVar(java.lang.String)
	at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.createMethod(FaceletTaglibConfigProcessor.java:659)
	at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.processFunctions(FaceletTaglibConfigProcessor.java:617)
	at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.processTagLibrary(FaceletTaglibConfigProcessor.java:318)
	at com.sun.faces.config.processor.FaceletTaglibConfigProcessor.process(FaceletTaglibConfigProcessor.java:263)
	at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:337)
	... 37 more

Alguém sabe dizer com quais versões do primefaces e jsf esse erro não acontece?

Quem souber de algum bug do primefaces, incompatibilidade de versões, ou do maven, por favor, avisa.....

Valeu pessoal....

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