Mass Effect Freezing at the END!!! - PS3

I literally just finished playing ME1 on my PS3 and also experienced it freezing three times. Once while fighting Saren before it even got to the mid-fight cutscene, another time during that cut scene, and the last time was during the fight again. I was playing as an adept on veteran and was not about to go to an easier difficulty for the final fight. I read somewhere to avoid using powers during the fight and that actually worked for me. It was a pain seeing as powers are kind of the point of being an adept. Wrex and Garrus both still used their powers so it seemed like a Shepard exclusive thing so I would try that before erasing, reinstalling, or changing the difficulty of your game.

The biggest question I have is why hasn't this been addressed? The Trilogy came out two years ago. I just bought it a few months ago and just now had time to play it and two years after it's initial release this is still a game killing issue for a lot of people.