System unreachable if idle
 

I am running SuSE 8.2 on a server with ssh and ftp remote access capabilities. I have noticed that if I leave the system at the kde log in screen after a few minutes the system is not pingable and cannot be accessed. The same thing happens if I leave a user logged in. Does anyone know why this is?

Thanks,

First disable the screen savers. Have it blank the screen instead.
You might have a memory leak. Use sar to take a look at what was happen to your machine before it when down
sar -r;
also look in /var/log/messages for anythink "odd".