usb mouse

[Kent Tong]

Hi,

Would some kind soul please tell me how x.org works with usb mice? I've one
(MS USB mouse) that is working fine but xorg.conf shows that it is using
the IMPS/2 protocol. As it is a USB mouse, why x.org is using a PS/2 protocol
and it is still working? This is in Fedora core 3 (2.6 kernel).

In Fedora core 1 (2.4 kernel), using such a USB mouse will seemingly cause 
lockups. No pointer is seen and the keyboard seems to lockup but actually 
it is just extremely slow (say 10 seconds) to respond to key presses.

Thanks in advance.