Clearly this was a major issue on the Apple forums, which I have with 8.0. My Mac works perfectly with the 5Ghz band, and my iphone and iPad always have until the update. Now they don't see it and when they do and connect, it will auto-disconnect after a bit and it's really slow when it does work. The 2.4 band works pretty well. If you were having this problem before you updated to 8.02, how is it doing now? I'm not about to jump into that unless it will fix the problem.