still frustrated

Never mind all the pictures and music I lost when my hard drive in my Mac crashed.
I brought my Mac in today so they could re-format my operating system, and she assured me I wouldn't lose any of my files. Well wouldn't you know my 2500 pictures I had on my computer weren't there! No worries right? I got an external hard drive for Time Machine to automatically back up every half hour (one of the features of the new amazing Leopard operating systems for Mac). Oh, but of course it's my operating system that corrupted! (That what they say since Macs "can't get viruses") So my Time Machine has been generating error messages and hasn't been running the back up!!!! I might not have those pictures! So tonight I have to go back again to see if my external hard drive has been in fact backing up, and to see if they can get my computer to recognize my ipod, etc.
I'm so over Macs!