Okay, I have two questions. First is that my Internet has been sporadic lately, my airport signal is always full, but Safari goes from fast to not responsive (the internet is non-responsive not the browser). I've tried Firefox and Camino and they do the same thing, sometimes fast sometimes not. This all started a couple days ago when I reset Safari. I've shut down my whole network and still it occurs. I called AppleCare and they had me set "Interference Robustness" and that seems to have countered the problem, at least for now. But this leads to my second problem, after talking to tech support and getting things working again, I closed the lid on my MacBook to put it to sleep. When I come back about an hour later, I open it and then the screen greys out (I can still see what's on my screen, it's just got grey filter over it) and it tells me to restart. What caused this?