Unable to add java.net repository to nexus

Hi,
When i'm trying to add http://download.java.net/maven/2/ to my nexus repo manager,i've got this exception in nexus.log, repository is added put no artifact is available.

Any ideas :

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2009-06-15 13:40:18 INFO  [080-Processor19] - o.s.n.p.r.Repositor~:default  - Added repository ID='maven2-repository.dev.java.net' (contentClass='maven2', mainFacet='org.sonatype.nexus.proxy.maven.MavenProxyRepository')
2009-06-15 13:40:18 INFO  [080-Processor19] - o.s.n.c.a.NexusConf~:default  - Applying Nexus Configuration...
2009-06-15 13:40:18 INFO  [ool-1-thread-11] - o.s.n.f.FeedRecorder:default  - Reindexing repository Java.net : Process started on Mon Jun 15 13:40:18 CEST 2009, not yet finished.
2009-06-15 13:40:19 INFO  [ool-1-thread-11] - o.s.n.i.IndexerMana~:default  - Trying to get remote index for repository maven2-repository.dev.java.net
2009-06-15 13:40:19 INFO  [ool-1-thread-11] - o.s.n.p.r.Repository:maven2   - Expiring local cache in repository ID='maven2-repository.dev.java.net' from path='/.index'
2009-06-15 13:40:19 INFO  [ool-1-thread-11] - o.s.n.p.w.Walker:default      - Aborted walking on repository ID='maven2-repository.dev.java.net' from path='/.index', cause:
org.sonatype.nexus.proxy.ItemNotFoundException: Item not found on UID maven2-repository.dev.java.net:/.index in repository maven2-repository.dev.java.net
        at org.sonatype.nexus.proxy.repository.AbstractProxyRepository.doRetrieveItem(AbstractProxyRepository.java:638)
        at org.sonatype.nexus.proxy.maven.AbstractMavenRepository.doRetrieveItem(AbstractMavenRepository.java:334)
        at org.sonatype.nexus.proxy.repository.AbstractRepository.retrieveItem(AbstractRepository.java:816)
        at org.sonatype.nexus.proxy.walker.DefaultWalker.walk(DefaultWalker.java:92)
        at org.sonatype.nexus.proxy.repository.AbstractRepository.clearCaches(AbstractRepository.java:474)
        at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:646)
        at org.sonatype.nexus.index.DefaultIndexerManager.updateIndexForRemoteRepository(DefaultIndexerManager.java:608)
        at org.sonatype.nexus.index.DefaultIndexerManager.downloadRepositoryIndex(DefaultIndexerManager.java:575)
        at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:487)
        at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:442)
        at org.sonatype.nexus.DefaultNexus.reindexRepository(DefaultNexus.java:1364)
        at org.sonatype.nexus.tasks.ReindexTask.doRun(ReindexTask.java:40)
        at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:139)
        at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:342)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
2009-06-15 13:40:19 INFO  [ool-1-thread-11] - o.s.n.p.r.Repository:maven2   - Clearing NFC cache in repository ID='maven2-repository.dev.java.net' from path='/.index'
2009-06-15 13:40:19 INFO  [ool-1-thread-11] - o.s.n.p.s.r.RemoteR~:apacheH~ - Remote storage settings change detected, updating HttpClient...