mouse freaks out

["Jason Dunsmore" <jasondunsmore@gmail.com>]

My Logitech usb mouse (model M-BT96a) has a tendancy to freak out a
couple of times per hour.  When this happens, the mouse cursor
suddenly goes to one of the screen corners.  When I try to reorient
myself by moving the mouse to see where it went, the mouse moves
rapidly all over the screen.  Normality is restored about 3 seconds
after this happens.  I've tried three different Logitech mice, and
they all have this problem.  I'm using Enlightenment with Debian Etch
and kernel 2.6.16.13.  Any idea what the problem is?

Thanks,
Jason