Out Of Memory Problem Again

[mat]

My server sometimes faced "OOM" problem. (I couldn't profile it since TPTP
crashed my server before OOM occured). I didn't see major memory leak when
profiling. Therefore, I believe OOM happens when READ or WRITE operation
can't handle the incoming messages or outgoing messages. (However my
incoming messages normally 20 * 512bytes/sec, NOT too fast, right?). Last
time i saw my server memory usage is over 600MB in windows XP.