Hi, I've had an ASUS U52F laptop. It has worked fine for about 6 months. I know how to use the radio button (f2+function button), to turn it on and off. This morning I woke up and I didn't have internet access, so I tried to use that button and on the screen when I would use it before it would say "Wireless LAN ON/OFF" when you press it. Obviously if it was being turned on it would say on, and off, off. Well now when I press f2+function it says "Wireless LAN OFF". So ok, you figure you just press it again, but you press it again it says "Wireless LAN OFF" still.
I've uninstalled Intels WiFi Max as well as ASUSs own WiFi thing and got the latest drivers for both of those off of the ASUS website, it's still doing the same thing. IF you open Intel's WiFi max all of the options (even the option to enable the wireless radio button) are grayed out.