I have a Macbook Pro and I use a Bluetooth MS Mouse it used to work perfectly fine (other than it's slow to wake up). But every since earlier this year the Cursor has started to jump around, or move slowly during downloads - whether it's iTunes, Internet, etc. One of the recent Leopard updates broke it. I would try and replace the mouse if a) I didn't like it and b) if I thought it wouldn't happen to whatever I replaced it with. Is this just happening to me?