It is unclear what is causing this problem, at first people said it was due to tighter memory tolerances, but then reports came in about even apple RAM upgrades causing the crash. Now it seems like it may be a lingering hardware bug that wasn't revealed by previous OS's. You can read lots more about this on the MacFixIt Forums in this thread.
Apple does not have a fix for this yet, in fact they appear to be denying that it is a problem, so I encourage anyone else experiencing this bug to fill out a bug report form.
Patri Friedman (patriNOSPAM@izzy.com)

