my computer hangs from time to time and...

[Paul]

Hello.

My computer is hanging from time to time. It just freezes. Usually
when I'm using e-mule and letting it working long time, but it's not a
temperature problem because usually works well for days and nights and
then, in any moment, it hangs.

I've been reading /var/log/messages and /var/log/otherlogs without
being able to find nothing strange.

Can anyone tell me where else can I try to find the reason of the
hangs? The fs's are not 100% or anything like that.

I'm quite lost.

Thanks.
Paul.