I just upgraded from Vitsa to win 7 pro. When i visit a web site that contains flash, ie: youtube.com, espn.com; among others. my networking adaptor will become disabled. to reenable i just use the windows troubleshooter utility and that fixes it. i have an asus m2n-e mother board with nvidia chipset, nforce builit on networking controller. happens with firefox, ie and chrome. i unistalled and reinstalled flash, asus doesn't have win 7 drivers for that mobo yet. other video applications work fine, ie vlc or windows media player. i've upgraded vid card (geforce 9600) drivers to latest win7 drivers.