I played a few hours before the release date on CFW / Duplex release. Worked fine. The next day when I tried to play on release day, I had the server error and it has not worked since.
I have tried a new PS3 and PSN account with no go, still the same server issue. Now I am running the USA Dumptruck release with no improvement. I have never been able to connect since a few hours before release date.
On 1.02 update it would crash during the dolby logo if connected to PSN. Without PSN or on version 1.00, single player was fine.
On the other hand, Black Ops 1 always works just fine online, have never had an issue. Strangely, I had tried NBA 2k12 (retail disc) to see if online worked on that game, it did not, claimed the 2k servers were down..... so I'm not so sure about anything.