I have a brand new early 2011 Macbook Pro 15" and its randomly dropping the Wifi signal. I just updated to 10.6.7 and it's still doing it. I have an Apple Airport Extreme router and none of my other computers ever drop their wifi signal so something must be unique to this computer that I've owned for a week. I only use the Mac in OS X, I have no Windows on it. Anyone else seeing their wifi drop off at random intervals? If I do a run thru "network diagnostics" it comes right back up instantly so something must be up.