Maven 3.1.1 build issues

Hi,

I run into the following exception, someone suggest to replace the plexus-classworlds-2.5.1.jar with version 2.4.

It do solve the problem, my questions is did we fixed this issue? Any new versions of plexus-classworlds can I use?

Exception in thread "pool-1-thread-3" java.lang.LinkageError: org.eclipse.aether.spi.connector.Transfer$State
02:21:54 at java.lang.ClassLoader.defineClassImpl(Native Method)
02:21:54 at java.lang.ClassLoader.defineClass(ClassLoader.java:295)
02:21:54 at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:143)
02:21:54 at java.net.URLClassLoader.defineClass(URLClassLoader.java:700)
02:21:54 at java.net.URLClassLoader.access$400(URLClassLoader.java:81)
02:21:54 at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1148)
02:21:54 at java.security.AccessController.doPrivileged(AccessController.java:314)
02:21:54 at java.net.URLClassLoader.findClass(URLClassLoader.java:583)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:389)
02:21:54 at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
02:21:54 at org.eclipse.aether.spi.connector.Transfer.<init>(Transfer.java:44)
02:21:54 at org.eclipse.aether.spi.connector.MetadataDownload.<init>(MetadataDownload.java:42)
02:21:54 at org.eclipse.aether.internal.impl.DefaultMetadataResolver$ResolveTask.run(DefaultMetadataResolver.java:606)
02:21:54 at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
02:21:54 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
02:21:54 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
02:21:54 at java.lang.Thread.run(Thread.java:780)
02:21:54 Exception in thread "pool-1-thread-2" java.lang.LinkageError: org.eclipse.aether.util.repository.layout.MavenDefaultLayout
02:21:54 at java.lang.ClassLoader.defineClassImpl(Native Method)
02:21:54 at java.lang.ClassLoader.defineClass(ClassLoader.java:295)
02:21:54 at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:143)
02:21:54 at java.net.URLClassLoader.defineClass(URLClassLoader.java:700)
02:21:54 at java.net.URLClassLoader.access$400(URLClassLoader.java:81)
02:21:54 at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1148)
02:21:54 at java.security.AccessController.doPrivileged(AccessController.java:314)
02:21:54 at java.net.URLClassLoader.findClass(URLClassLoader.java:583)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:389)
02:21:54 at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
02:21:54 at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
02:21:54 at org.eclipse.aether.connector.wagon.WagonRepositoryConnector.<init>(WagonRepositoryConnector.java:114)
02:21:54 at org.eclipse.aether.connector.wagon.WagonRepositoryConnectorFactory.newInstance(WagonRepositoryConnectorFactory.java:159)
02:21:54 at org.eclipse.aether.internal.impl.DefaultRepositoryConnectorProvider.newRepositoryConnector(DefaultRepositoryConnectorProvider.java:139)
02:21:54 at org.eclipse.aether.internal.impl.DefaultMetadataResolver$ResolveTask.run(DefaultMetadataResolver.java:613)
02:21:54 at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
02:21:54 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
02:21:54 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
02:21:54 at java.lang.Thread.run(Thread.java:780)