I have a Broadcom 4318 inside my Acer TravelMate 2480 laptop. This card works fine in any OS. Whenever I update the drivers on XP, Vista, or Ubuntu, my activity LED would stay solid and only flash with activity. However, on 7, bad things happen. When I update the drivers though MS Update, I get slow connection speeds, random wifi drops, and the light doesn't stay solid. However, if I stay with the drivers that come with 7, my wifi works fine (besides the non-solid LED). Anyone else have a similar issue?