Hey, even I make mistakes I shouldn't!
I was working on my former boss' laptop yesterday. Someone re-installed Windows for him but didn't know how to load the device drivers. I installed them all and went to test the wireless card. it kept saying it could detect any local wireless sources but there were as my laptop did. I initially concluded it was spyware and started running AS scans. Then DOH! It's a fresh install so it can't be spyware. I then remembered, the hardware switch on the front edge of laptops! BINGO! Boy did I feel stupid!
It happens to use all!
-- Andy