This same problem (but more rare) with version 2.3.2. Java VM 1.3.1 and kernel 2.4.18

exectly something like this:
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start(Native Method)
at com.limegroup.gnutella.Acceptor$ConnectionDispatch Runner.<init>(Unknown Source)
at com.limegroup.gnutella.Acceptor.run(Unknown Source)