Well, my Dual 2.5Ghz G5 has given me the "Gray screen of death" ("You must restart your computer...") twice in the last 4 days. This is much more unstable than my iMac was (I got the "Gray screen of death" about 3 times in the 2 years I used it). Has anyone else had similar problems? What should I do? HELP! -- Oh, and please no "Well, you're an early adopter..." critisism!