Olá gente!
Estou tendo um problema com o Netbeans no Linux aqui. Como estou usando Linux a pouco tempo, estão surgindo algumas dúvidas, mas o que acontece é o seguinte:
Toda vez que eu abro o Netbeans, aparecem dois erros:
Esse:
Detalhes:
java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at org.netbeans.JarClassLoader.doLoadClass(Unknown Source)
at org.netbeans.ProxyClassLoader.selfLoadClass(Unknown Source)
at org.netbeans.ProxyClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at org.netbeans.modules.mercurial.config.HgConfigFiles.loadSystemAndGlobalFile(Unknown Source)
at org.netbeans.modules.mercurial.config.HgConfigFiles.<init>(Unknown Source)
at org.netbeans.modules.mercurial.config.HgConfigFiles.getSysInstance(Unknown Source)
at org.netbeans.modules.mercurial.Mercurial.loadIniParserClassesWorkaround(Unknown Source)
at org.netbeans.modules.mercurial.Mercurial.init(Unknown Source)
at org.netbeans.modules.mercurial.Mercurial.getInstance(Unknown Source)
at org.netbeans.modules.mercurial.MercurialVCS.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at org.openide.util.lookup.MetaInfServicesLookup$P.getInstance(Unknown Source)
at org.openide.util.lookup.AbstractLookup$R.allInstances(Unknown Source)
at org.openide.util.lookup.ProxyLookup$R.computeResult(Unknown Source)
at org.openide.util.lookup.ProxyLookup$R.allInstances(Unknown Source)
at org.netbeans.modules.versioning.VersioningManager.refreshVersioningSystems(Unknown Source)
at org.netbeans.modules.versioning.VersioningManager.init(Unknown Source)
at org.netbeans.modules.versioning.VersioningManager.getInstance(Unknown Source)
at org.netbeans.modules.versioning.VersioningAnnotationProvider.getInterceptionListener(Unknown Source)
at org.netbeans.modules.masterfs.ProvidedExtensionsProxy.fileLocked(Unknown Source)
at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.lock(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils$2.run(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils$2.run(Unknown Source)
at org.openide.util.Mutex.writeAccess(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils.putGlobalProperties(Unknown Source)
at org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider$1.run(Unknown Source)
at org.openide.util.Mutex.postRequest(Unknown Source)
at org.openide.util.Mutex.postWriteRequest(Unknown Source)
at org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider.libraryCreated(Unknown Source)
at org.netbeans.modules.project.libraries.LibrariesStorage.loadFromStorage(Unknown Source)
at org.netbeans.modules.project.libraries.LibrariesStorage.initStorage(Unknown Source)
at org.netbeans.modules.project.libraries.LibrariesStorage.getLibraries(Unknown Source)
at org.netbeans.modules.project.libraries.LibrariesModule.initProviders(Unknown Source)
at org.netbeans.modules.project.libraries.LibrariesModule.restored(Unknown Source)
at org.netbeans.core.startup.NbInstaller.loadCode(Unknown Source)
at org.netbeans.core.startup.NbInstaller.load(Unknown Source)
at org.netbeans.ModuleManager.enable(Unknown Source)
at org.netbeans.core.startup.ModuleList.installNew(Unknown Source)
at org.netbeans.core.startup.ModuleList.trigger(Unknown Source)
at org.netbeans.core.startup.ModuleSystem.restore(Unknown Source)
at org.netbeans.core.startup.Main.getModuleSystem(Unknown Source)
at org.netbeans.core.startup.Main.start(Unknown Source)
at org.netbeans.core.startup.TopThreadGroup.run(Unknown Source)
[catch] at java.lang.Thread.run(Thread.java:595)
E esse:
A org.openide.filesystems.FileAlreadyLockedException exception has occurred.
However, the system should continue working without further problems.
Detalhes:
org.openide.filesystems.FileAlreadyLockedException: /home/soraia/.netbeans/6.5/build.properties
at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.registerLock(Unknown Source)
at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.tryLock(Unknown Source)
at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.lock(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils$2.run(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils$2.run(Unknown Source)
at org.openide.util.Mutex.writeAccess(Unknown Source)
at org.netbeans.spi.project.support.ant.PropertyUtils.putGlobalProperties(Unknown Source)
at org.netbeans.modules.java.j2seplatform.J2SEPlatformModule$1.run(Unknown Source)
at org.openide.util.Mutex.postRequest(Unknown Source)
at org.openide.util.Mutex.postWriteRequest(Unknown Source)
at org.netbeans.modules.java.j2seplatform.J2SEPlatformModule.updateBuildProperties(Unknown Source)
at org.netbeans.modules.java.j2seplatform.J2SEPlatformModule.restored(Unknown Source)
at org.netbeans.core.startup.NbInstaller.loadCode(Unknown Source)
at org.netbeans.core.startup.NbInstaller.load(Unknown Source)
at org.netbeans.ModuleManager.enable(Unknown Source)
at org.netbeans.core.startup.ModuleList.installNew(Unknown Source)
at org.netbeans.core.startup.ModuleList.trigger(Unknown Source)
at org.netbeans.core.startup.ModuleSystem.restore(Unknown Source)
at org.netbeans.core.startup.Main.getModuleSystem(Unknown Source)
at org.netbeans.core.startup.Main.start(Unknown Source)
at org.netbeans.core.startup.TopThreadGroup.run(Unknown Source)
[catch] at java.lang.Thread.run(Thread.java:595)
Alguém saberia o que pode ser e como solucionar isso??? 
Vlw gente !!!