windows Vista Mouse Jumping and hard to control in parallal

[spatterfree]

I'm running Windows vista ultimate on my Imac and lately the mouse started acting weird on Vista, it's jumping around and moving unpredictable,
and also i use windows in spaces, and i can't switch to spaces anymore until i click control + command, please let me know what the problem is, ohh i'm running a USB G9 Logitech mouse.

[McShizzel]

Could be any number of things, have you tried connecting another mouse to your computer and see if the problem still comes up?