Ok. I posted this in the noob forum but nobody helped

. anyways, im running mandrake 9 and when i boot it it works fine, but if i log off, the mouse basically dies and is no longer usable. the cursor remains in the middle of the screen but is uncontrollable unless i restart the computer in which it works until i log off again... im using a microsoft wheel mouse optical usb and i believe i configured it to use a wheel usb mouse. thanks!