Just got this exception while loading up a bunch of data on a fresh 0.5.0-beta2 install.  I haven't been able to reproduce it yet.

WARN - Problem reading from socket connected to : java.nio.channels.SocketChannel[connected local=/127.0.0.1:7000 remote=/127.0.0.1:51199]
WARN - Exception was generated at : 12/10/2009 09:33:33 on thread MESSAGING-SERVICE-POOL:1
Reached an EOL or something bizzare occured. Reading from: /127.0.0.1 BufferSizeRemaining: 16
java.io.IOException: Reached an EOL or something bizzare occured. Reading from: /127.0.0.1 BufferSizeRemaining: 16
        at org.apache.cassandra.net.io.StartState.doRead(StartState.java:44)
        at org.apache.cassandra.net.io.ProtocolState.read(ProtocolState.java:39)
        at org.apache.cassandra.net.io.TcpReader.read(TcpReader.java:96)
        at org.apache.cassandra.net.TcpConnection$ReadWorkItem.run(TcpConnection.java:445)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)

INFO - Closing errored connection java.nio.channels.SocketChannel[connected local=/127.0.0.1:7000 remote=/127.0.0.1:51199]