my black ops 2 has been a bit stupid lately, zombies mode works fine but whenever i try to go to multilayer i has the BO2 loading thingy at the bottom right hand of the screen but after that its just a black screen. my PlayStation freezes and i haft to manually turn it off.
oh and all this started when i had to download the new update and i have deleted and reinstalled all my data and dlcs
I see that you have stated that you deleted your game data utility folder, but have you tried to perform a file system restore on your console?
You can find out more about this process here: http://community.us.playstation.com/t5/PlayStation-Home-Support/Restoring-your-P S3-File-System-amp-Database-Helps-to-Maintain/td-p/37322987