Apparently the God of War collection is having freezing issues, making the game literally unplayable for many users. The culprit? While the issue has been reported on a number of different consoles, which version of the PS3 is getting hit harder the most you might ask? 
 
From Joystiq:
 

Some folks over on the official PlayStation Forums allege to be having trouble playing God of War Collection. Several users are complaining that the game has been locking up on them, specifically after God of War's first cutscene and during the first mission. Most of the people who claim to be running into this freezing issue are running the game on 60GB launch PS3s, though a few PS3 Slim owners have also jumped into the threads to report the game is locking up on them, too.

Additionally, commenters on PlayStation.Blog have reported the same problem and specifically implicate 60GB PS3s. While we didn't experience such issues playing the final game code on a debug PS3 unit, we've contacted Sony for comment on this report and will update as necessary.
 

Sources: 
"God of War Collection Freezing Issues" [PlayStation.com Forums] 
 PlayStation.Blog comments

That's right. Say it out loud: 
The version of the Playstation 3, that plays Playstation 2 games, has difficulty playing an HD Playstation 2 game. 

God of War collection is a Playstation 3 game. I guess the problem with having multiple iterations on a single console is forgetting to properly test each game on each different version of the hardware, I'm sure they'll fix the problem and be more careful in the future.

as someone who has to buy a new Xbox 360 because EVERY game freezes, this doesn't seem like a big problem.

Oh man that sucks.

Have you read the US playstation board? Because if you have you would know to take everything posted there with a cup pf salt.

I'm working on the assumption that they've only tested it on one type of model.

" @vidiot said: 

That's right. Say it out loud: 
The version of the Playstation 3, that plays Playstation 2 games, has difficulty playing an HD Playstation 2 game. 

my mind is crying  "

That really sucks, im glad i got lucky and my 60gb one runs it completely fine.

Wow, 140 views and 10 posts. 
 
That sucks man.

this game has crashed twice on me and I have an old 40gb PS3. (I think that's what it is anyway -- it's my roommate's, and there's no BC)
 
GOW1 crashed during the second part of the last boss sequence (ARGH)
GOW2 hard locked (as in I had to turn the whole system off) during a completely routine wallclimb with no action going on at all and zero enemies on the screen
 
the last PS3 game I played, Uncharted 2, also locked my PS3 a few times. I'm starting to think my PS3 is just dumb.

Dude GW1 crashes all the goddamn time. And yeah same as transience, the uncharted 2 game I just got fucks up too. 
 
By crash, I mean like... totally frozen, I had to reboot it a lot.

Sweet irony.

sucks, although i'd much rather have the backwards compatibility. I have a 60gb PS3 but not the launch one, it's the last of the line of "Fat" ps3s. I knew that it wasn't backwards compatible, but it would have been sweet if it was, since I never got a ps2 and would love to play some of those games.

The version of the Playstation 3, that plays Playstation 2 games, has difficulty playing an HD Playstation 2 game.