I'm trying to get to the bottom of this phantom slow mouse problem a lot of people seem to suffer from once and for all. It doesn't necessarily make sense it would be the motherboard but its the only thing we haven't eliminated. All these boards have been identified as being highly suspicious:

MSI K7T266
Abit NF7
Asus P4C800
Asus P4P800

Does anyone have one of these mobos and get a fast solid mouse response (in which case it must be something else) or does it suck for you too?

(*Just a reminder this isn't related to any of the ordinary mouse problems with things like XP, acceleration, psu, usb, ps2, mouseware, priority settings etc that already have well known fixes*)