I have just had a painful experience upgrading from 7.3 to 8.0. I took the opportunity to upgrade my HD at the same time - so I archived off /etc, /home etc to tape and did a new install to the new disk. All went well for a while, but as soon as I started to try and actually do anything, the PC hung solid with the Caps Lock & Scroll Lock lights flashing on the keyboard and the Disk light on permanently. A few iterations (and many hours) later, I worked out that the points it was crashing were about the time I would expect it to start swapping, and knowing that one of the kernel hackers who works for SuSe is making changes to the VM system, I thought that maybe the SuSe kernel (kernel_dflt) had some "tweaks" to the VM system which my system did not like. So I disabled swapping and built & installed the 2.4.19-pre7 "stock" kernel (which is what I was using on 7.3) and have had no problems since. My system is a PIII 600MHz, Intel i820 chipset, 256M RAM.