It’s been six days now since I put my 4Gb RAM upgrade back into my 15″ MacBook Pro (Late 2008, Unibody). So far, I have had one Kernel Panic, but no freezes or other issues. It wasn’t really being stressed when it had the Panic, but it had been on permanently since the memory went back in (I usually don’t reboot unless I do an update, the Mac seems waaay more stable than any PC so I never have to). That Panic was two days ago.

I’ve alsdo just done the firmware and SMC updates from Apple, although I don’t think there was anything in them related to the 4Gb issue.