I just recently started a job in a lab that is predominantly PC but has a few Macs (2 dual 450's and 3 iMacs). I am the only Mac enthusiast in the bunch (everyone else constantly berates the Macs *OT* ...

Well i got a panic call from the Inlaws that their Imac hangs on boot-up. It will hang and then a tiny folder appears in the middle of the screen with a flashing question mark/and that os face icon.