I cant run neo4j on my ubuntu server, and this is my neo4j log

Jan 22, 2014 11:01:19 AM org.neo4j.server.logging.Logger log
INFO: Setting startup timeout to: 120000ms based on -1
Jan 22, 2014 11:01:21 AM org.neo4j.server.logging.Logger log
SEVERE: 
org.neo4j.server.ServerStartupException: Starting Neo4j Server failed: 
Error starting org.neo4j.kernel.EmbeddedGraphDatabase, 
/usr/local/src/neo4j-community-2.0.0/data/graph.db
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:209)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:87)
at org.neo4j.server.Bootstrapper.main(Bootstrapper.java:50)
Caused by: java.lang.RuntimeException: Error starting 
org.neo4j.kernel.EmbeddedGraphDatabase, 
/usr/local/src/neo4j-community-2.0.0/data/graph.db
at 
org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:333)
at 
org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:63)
at 
org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:92)
at 
org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:198)
at 
org.neo4j.kernel.impl.recovery.StoreRecoverer.recover(StoreRecoverer.java:115)
at 
org.neo4j.server.preflight.PerformRecoveryIfNecessary.run(PerformRecoveryIfNecessary.java:59)
at org.neo4j.server.preflight.PreFlightTasks.run(PreFlightTasks.java:70)
at 
org.neo4j.server.AbstractNeoServer.runPreflightTasks(AbstractNeoServer.java:319)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:144)
... 2 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 
'org.neo4j.kernel.extension.KernelExtensions@4b9de054' was successfully 
initialized, but failed to start. Please see attached cause exception.
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:504)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
at 
org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:310)
... 10 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 
'org.neo4j.index.lucene.LuceneKernelExtension@5df0330b' was successfully 
initialized, but failed to start. Please see attached cause exception.
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:504)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
at 
org.neo4j.kernel.extension.KernelExtensions.start(KernelExtensions.java:118)
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:498)
... 12 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 
'org.neo4j.index.impl.lucene.LuceneDataSource@3fc9dd8c' was successfully 
initialized, but failed to start. Please see attached cause exception.
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:504)
at org.neo4j.kernel.lifecycle.LifeSupport.bringToState(LifeSupport.java:411)
at org.neo4j.kernel.lifecycle.LifeSupport.add(LifeSupport.java:324)
at 
org.neo4j.kernel.impl.transaction.XaDataSourceManager.registerDataSource(XaDataSourceManager.java:236)
at 
org.neo4j.index.lucene.LuceneKernelExtension.start(LuceneKernelExtension.java:79)
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:498)
... 15 more
Caused by: java.lang.NullPointerException
at 
org.neo4j.kernel.impl.index.IndexProviderStore.<init>(IndexProviderStore.java:66)
at 
org.neo4j.index.impl.lucene.LuceneDataSource.newIndexStore(LuceneDataSource.java:301)
at 
org.neo4j.index.impl.lucene.LuceneDataSource.start(LuceneDataSource.java:224)
at 
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:498)
... 20 more

Jan 22, 2014 11:01:21 AM org.neo4j.server.logging.Logger log
SEVERE: Failed to start Neo Server on port [7474]

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