Originally posted by Xorox
Not trying to mod or anything, just playing normally on a OFW ps3. No mods or anything installed.
OK, but you said you had service done, so I am assuming you had a recovery done. More than likely, something happened during the recovery. I am not sure as much about WAW(I play it, but not very often), but with Black Ops 2, also by Treyarch, if you change stats, prestige, etc. without starting from either a new account, or a fresh prestige, You will get the message on startup something along the lines of "data corrupted, reverting back to original prestige or something like that... It could also be something along those lines since it is Treyarch. Try to see what happens with a brand new account. If it starts up, then you know the recovery is bad.
Also, I remember something happening on my OFW PS3 with COD 4. I would go to play online, and it would give me some kind of error message. I researched it, an unfortunately it was something to do with the fact of an older COD game and network compatability with no fix. The only solution I had for that one was to buy the digital download which worked fine after that. Oddly enough, the same disk I had issues with, I copied to my jailbroken PS3's hard drive, and it played perfectly, which led me to believe that had I messed around with my network settings in the PS3 ports and such, I probably could have gotten it working. But I'm lazy...
Lastly, the symptoms you are describing are very telltale of a shitty disk. Go to gamestop and pick up a used copy(should be able to get it on the cheap), make sure you completely delete anything having to do with the game from the PS3, an re-install the disk. Hopefully it will work for you.