it seems that the Computer option in the start menu has gone missing, and clicking customize doesn't work, since it's not an option there. If it hadn't been for my shortcut to Computer in my quick launch, I probably wouldn't be able to go there. When I do go there though, it doesn't show any of my drives, just a white background :\ Also, it seems I can't get it to display on my desktop, since in the Desktop Icon settings it shows up greyed out..
I think this was the work of Unibue System Tweaker, I got it for free with the purchase of SpyEraser, and I tried it out, but it's default options aren't the same as your current options, so when I closed it and restarted, some things I hadn't touched changed :\
Any help please? :\