[mistwang]

Originally Posted by lopis

How do i do a backtrace? and what kernel do you recommend that i upgrade to?

Never debugged a kernel bug, so I am not sure either. but I think it is should be a kernel configuration to let kernel dump a backtrace like the one I posted.

The RHEL5 kernel should be stable, otherwise, we will be flooded with bug reports like yours.

Is there any kernel parameter, tuning applied to the default setup?

Another suggestion is to load 64bit Linux if your server has more than 4GB memory, otherwise get rid of the PAE kernel.

You can try restarting LSWS regularly as suggested as well.