Nice! My mouse froze again a few minutes ago on my Edgy Eft - Gnome - Beryl desktop. I thought it was a driver problem or some instability from the above. However, after killing the X session and restarting it, someone (Xorg?) or more likely the mouse driver, told me that my mouse power was getting low and it needed to be “recharged.”
Of course! My Logitech wireless mouse neede new batteries!
A trip to the supply cabinet with help from Jim K solved the problem.