morning guys, first post here, just thought id see your views on the following i picked up an i5 imac a few nights ago from an apple store. checked the screen while i was there for any cracks, seemed fine! got it home then had a nagging feeling i should power it up and check it. (its an xmas pressie) so i fired it up screen seemed ok on the white background then it just stuck with a flashing folder. after some research i inserted the snow leopard boot disk and then i was instructed that my hard disk didnt have an os on it! it was a blank hdd!! i was told i had to enable journaling and i also noticed the disk was called diagnostics. does anyone know if they run diagnostics on it first? then maybe mines just slipped the net. bit concerned that it was able to leave their factory with no os installed on it whatsoever! its installed now anyway and it boots to the welcome screen now as a new mac should. hopefully itll be ok, seems to have a very very slight yellow tinge, no apparent dead pixels so far and runs quiet so id rather not return it if i dont have to. any views why it would be like this?