Hi,

I've been using cassandra for a while, but after a upgrade to 1.0.7, every machine kept running perfectly. Well, except one that constantly throws this error:
ERROR [ReplicateOnWriteStage:39] 2012-04-02 12:02:55,131 
AbstractCassandraDaemon.java (line 139) Fatal exception in thread 
Thread[ReplicateOnWriteStage:39,5,main]
java.lang.NoClassDefFoundError: Could not initialize class 
org.apache.cassandra.cache.FreeableMemory
        at 
org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
        at 
org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
        at 
org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
        at 
org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1170)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1194)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1151)
        at org.apache.cassandra.db.Table.getRow(Table.java:375)
at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:58) at org.apache.cassandra.db.CounterMutation.makeReplicationMutation(CounterMutation.java:99) at org.apache.cassandra.service.StorageProxy$7$1.runMayThrow(StorageProxy.java:544) at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1223) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

The machine does run, but nodetool doesn't connect to the machine for example.
Any ideia from what could be trigerring this?

Thanks,

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