Recently I loaned my ibook to a friend and when I got it back the battery was completely drained. When I plugged it in and started it up, a message appeared saying that the date was set to 1969 and it would cause some programs to mess up. I became concerned because I know my friend likes to tinker and although I trust him, I cant rule out the possibility. I attempted to look at the hardware profile for my computer to see if he changed anything and it came up blank. Can someone please tell me how to check this and make sure he didnt take anything out or switch anything with his computer?