Strange Mouse Movements

[Danest]

Something odd happens whenever I try to zoom in or out with the middle mouse wheel/button. The cursor whips lightning fast into the lower right-hand corner, causing the map to scroll or the battle screen to swirl. I've tried looking over the control settings, which I haven't changed, but I can't see anything that could be causing this. It's not a major problem, but it's strange and a bit inconvenient. Anyone else see this happening?

[Dumbass]

Seems like a similar problem I had, only without the mouse wheel thing and it only happened sometimes when I moved the mouse. I can only suggest that if you have a laser mouse, use a blank white mousepad or sheet of paper as a mousepad instead of one with designs on it. The laser mouse's laser screws up when it encounters surfaces of different colours causing it to spazz out and sometimes fly off into one of the corners. I'm not sure if it will solve your problem though.