Maybe PS3 just svcks and I should get an Xbox...
Yes, it's interesting how sometimes the same errors occur with totally different games even from different developers.
With rage and Fallout 3, I think it's not necessarily because of the PS3.
I read a lot how crappy Fallout 3 runs on the PS3 but gave it a try (played it before only on the PC), but for me the game run fine. Not perfect, still had some crashes but the amount was comparable to the crashes on the PC like 1 in 10 hours. While others unfortunately had a pretty bad gaming experience.
But since it runs fine for some some and bad for others it's most likely not a problem with the PS3 per se.
I haven't heard much about crashes and freezes with rage, the top most problem seems to be the texture pop ins. But apparently not everyone is affected or not affected as badly. I have some and in a few areas it's more noticeable like at the start in Dan's House, but most areas run pretty amazing. In the ghost hideout I never noticed it once.
It's difficult to assume, what is likely the reason, why the game behaves differently on different PS3s. The hardware should be the same in every one.
Probably caused by the different drives in it. I have a 80GB Fat PS3 but changed the stock HDD to a new 500GB. Maybe this is why it runs better, but this shouldn't be the solution that everyone with problems needs to buy a different HDD. Hopefully id can patch the game that it runs acceptable for everyone
