Well, it's a tad more than a bit of a problem. On mouse click, my Windows will jump around, more specifically they hide. Usually, they just disappear and come right back, sometimes it's gone but reappears after another click, and sometimes it's just completely gone, I've gotta go to the Task Manager to pull it back up. It makes using this comp so difficult so if anyone would know what the problem is and how to fix it it would be very much appreciated! I'm running build 7100. Edit: I tried two different mouses in three USB ports, all with the same result, still happening. Edit2: Also often freezes up and crashes Firefox. Edit3: Just noticed something interesting, the bug only happens when I've got tabs open in Firefox, do you think it could be because I'm still using v3 and not 3.5? Also I suppose that would mean it's not a Windows 7 bug, hm, Edit4: Seems I've finally nailed what's causing this issue, it only happens while a page is loading. That's why it seemed to happen while a lot of tabs were open, because chances are pretty good that with a bunch of things open one of them will be loading.