I built an extreme cooling solution for mine lol
Ive had it since beginning of winter and no problems. When I DO play, Ill sit down for 5-8hours at a time non stop and play. The sides of the case stay cool like its never been turned on.
I have a plexiglass stand with 2 80mm fans underneath the 360 and 2 120mm fans out back sucking out air. The air out the back is noticably warmer from the time you turn on the 360.. to the time you start playing and things warm up. Cost me about $85 bucks to make though. Steep yes, however if it keeps me from going RROD Ill take it.