No problems in device manager. Intially after the upgrade ther were some issues but updated drivers fixed that. All though I didn't mention that when the usb ports stop working, a mouse or keyboard will still work, but not ipod, usb network adapter, EHD etc. I don't know how to update my bios...
Ever since I did a clean install to Windows 7 my USB ports stop working when I transfer data to my ipod or external hard drive. It doesn't matter which one it's plugged into, they all stop working, even when plugged into a powered USB hub. The only way to revive them is to restart the computer...