"ExitProsecSpree" - is crazy.
1) Mircrosoft owns the right to usb 2.0, thats why you will never find USB 2.0 drivers with motherboard. windows either uses the default windows USB drivers.. or you can download the updated usb driver just by going threw windwos update.
2) this may not affect your problem, but might as well try it... go to /start/run, type "devmgmt.msc", hit enter. go to the USB Controllers at the bottom of list... right click each Hub 1 by 1, go to properties/power managment... uncheck the box to 'allow comp to turn of this device to save power'.
3) dont konw if this still applies but people in the past reported usb problems after switching to SP2. not shur or not but this prob may be fixed by know (i wouldnt know) if so win update would fix it.