Being that they are older systems I would clean them out. If it is in fact over heating then I'm sure its all clogged up with dust regardless of the fact if its well ventelated or not. If your just watching netflix your not using the blu ray drive as you are when playing a game so less heat is going to be generated. Its not hard to clean them I did mine last year and was shocked with the amount of dust bunny's living inside of it. I was lucky it had not over heated yet. Lots of videos online of how to take it apart its very easy.
It isn't a conspiracy if they've done it before...and it makes sense from a marketing perspective. The ps4 isn't backwards compatible, so they can create a rush on their late model ps3s. It isn't cool, and it isn't ethical, but its certainly possible, legal, and profitable.
i have the exact same problem, i have tried contacted infinity ward but i am yet to recieve a reply after 2 weeks, i heard that it may be a save file problem with the file corrupting, which may make sense because i after i patch mw3 it works for the first session and then after that i just get crashing
Well its Infinity Ward....they already got your money so beyond that they dont care at all what happens. Does not matter how they treat their customers b/c they know when Ghosts is released people will come pouring in and buy that game to, and probably even those who had problems with previous games and asked for help and got nothing in return. As far as an answer to expect from them they would probably just tell you to buy COD Ghosts.