I have win 7 pro 32 bit and all works fine for 4 months now! But there is a problem with usb 2 devices Before a few months i had install a cannon ip3300 printer and all works ok.Today i replug the printer to print some photos and windows 7 cant even recognise that is printer on usb port! All usb ports are working fine! I have the same problem when i try to connect a erricson k500 on another pc with the same os... Is there any problem with usb 2 enumeration???