Mine is an original and not wanting to give it a kiss of death has been fine. Stands vertically with good air flow only thing next to it is the HDDVD drive

I suppose it could do with a vacuum.
Problem is the hype of failures. I work in the service industry (white goods) we have 2% failure within warranty, european targets are 3% most companies run at 5%.
Lets assume 1,000,000 units sold 20,000 of our appliances are allowed to have a "problem" if we say 1/4 of those that fail are heat related failures thats 5,000 units a significant number in any case but small fry really compared to the 980,000 working perfectly.....
You just have to adjust the figures given the desired percentages.
ok its not nice having a dud but statistically your not likely to have one go pop. Even more so if you follow the instruction manual fully......
When your pushing technology failures do increase but we all aim to be the best and sometimes we pay the price. If yours does fail just read up on some european law regarding warranty lengths

Its in consumers favor for once.