[opensuse] How to find out which process is accessing the disk?

Hello, I have OpenSuSE 11.1 installed and very often, after the machine is idle for a few hours, some process starts using the disk very heavily. When I get back to the computer it is almost unusable, everything is freezing and lagging while the disk continues working heavily. After a few minutes it gets better, but something still continues using the disk. I don't have beagle installed. How do I find out which process is accessing the disk when this happens? Thanks, Marcelo -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org