I love my mac, I have no problems with it, Spoke too soon! ...... Every time I turn my computer on, the dock reverts back to how it was when first installed it, my itunes play list corrupts, all the programs revert back to how they were when I first installed them i.e. in office I turn the project manager thing off at start up and it appears again. Microsoft Messenger goes back to the setup screen again. My keychains corrupt. My computer was working great since I installed Tiger the day it came out, whenever that was. Today I was in the library, I installed some widgets i.e. Google maps (which happened to quit unexpectedly) could it be these? It worked fine then I turned it off, turn it on about 1 hour later and there it was, corrupted. What I've done so far 1) Repaired keychain 2)Put all programs back in dock 3)went through all programs again to set them up how I liked them 4) set up microsoft messenger said that I wanted to put the icon in the dock, and the dock dissapeared and came up how it did before. I use backup 3 that backs up keychains and itunes library list on my .Mac account so I will hopefully beable to restore it, but there must be something wrong? Do I have the first mac virus?