Okay guys, I hope someone helps me out here. I bought a 13 inch i5 2011 model last year and most of the time it's in clamshell mode ( connected to the adapter and when I sleep i take it off sometimes/or just leave it on ). I'm getting worried for this year alone I have been experiencing freezes on my air , like 5 tabs in google chrome ( some videos with flash ads etc ) but this sort of thing didn't happen last year. ---- Does this happen to you guys ? Im getting worried clamshell mode might damage my air in the long run. ---- Is there a way to keep my air cool in clamshell mode ? ( im not talking of those stands , or maybe clean out the dust inside or something?