On Thu, 08 Nov 2007 06:40:16 -0500 fred smith fredex@fcshome.stoneham.ma.us wrote:
Doubt it. Office closed at night. I've got (luckily) my own office. I'm often the first person there, but it'a always like this.
Minor earthquake? Street sweeper, perhaps?
You could eliminate this as the cause by unplugging your mouse tonight when you go home and see what it looks like in the morning.