Maybe that why your PS3's are suffering, you don't realise how much damage you've done to them until you play a powerful game like Skyrim. RDR and Skate 3 have nothing on it. People really should start reading the part in the manul where it says you shouldn't play continuously, it might work for awhile but then you will only be able to handle weaker games, and not ones like Skyrim. The users is also at fault here people.
Ive played many games for over 8 hours and non of them experience the poor performance issues skyrim has, one game which definatly isnt weaker is battlefield 3 which came out just over two weeks ago, which is probably alot more demanding that skyrim and the fps on that is amazing after 8 hour + gaming.
Im not slagging off skyrim, because i think its a great game, but bethesda really need to fix this problem, if its the same problem they had with fallout 3 and new vegas then why have they not fixed it for skyrim. Also oblivion didnt have this problem on the ps3 because it was developed by a 4J studios, do bethesda just not care about ps3?