I didn't see any post yet regarding this issue.. anyway.. my macbookpro's ram was recently replaced by DH and was working perfectly. after a week, when i boot up may mac and the apple loading screen appears, it suddenly turned grey with a messge "you need to restart your computer . . .. blah blah blah" in 4 different languages! i tried looking for a fix over the net and couldnt find any. i tried reinstalling, it worked for a couple of hours but when i run firefox, the system froze again. when i boot up, i got the same prompt as above.. anyone who has experienced this same kind of problem?