hi, i just upgraded my memory from 2gb to 4gb and the hard drive from 160gb to 500gb. now, i'll be honest, i'm new to having a macbook so, alot of things i don't quite understand yet. now, my question is... my mac keeps making me restart for various errors/reasons. the 1st was dock, the second was kernal and the 3rd, just now was cvmsComp_x86_64. if you have any input on this that would be great! i tried to google it and got nowhere. if it's something i can handle at home i would much rather do than spending $60 for a diagnostics report @ the local mac store. Thanks!