Back when the game first came out and borrowed from my friend on the 360 enjoyed and beat it. I am considering getting it on the PS3 now but Im wondering if the PS3 version still have that problem where it freezes every time a friend logs on and off. 

While I can't answer that particular question because I have like, 2 PSN friends, I recently bought the GotY Edition for the PS3, aaaaand I'm only level 10, and have experienced 5 game crashes, and an auto save that once loaded, didn't allow a cinematic to trigger, leaving me to replay about an hours worth of game.   The frame rate is also bad, so I ended up torrenting the PC GotY edition, because If I'm spending 70$ on a game, I want it to at least be an enjoyable experience. (so much nicer on my PC... even though it's like 4 years old?)
 
Besides those major glitches, I've noticed a handful of graphical glitches.  When I had it for the 360 when it first came out, I never had the game crash on me. So if you can, I'd suggest 360 or PC.

no

" no "

You can go a game without a single crash, and others where it crashes a bunch. Just the nature of the fallout beast.

Man every version of the game has a plethora of problems, but it's still great.

" You can go a game without a single crash, and others where it crashes a bunch. Just the nature of the fallout beast. "