I hae an Aluminum iMac (20" base configuration). I am getting daily kernel panics, sometime more than one per day. They seem to happen with no rhyme or reason. Thus far, I have tested the RAM and done an erase and install of OS X 10.5. The RAM tested out just fine, and the kernel panics continue to happen. Anything else that I should test before calling Apple. Also, I want to get this thing fixed or replaced as quickly as possible. I have read several horror stories of multiple trips to the store, Apple returning the machines with the problem still occurring, etc. Any advice?