Remove your PlayStation Network Account from your PS3 and sign back in. See if it will sync then.
I know that's probably going to work, but i REALLY don't wanna delete my account because then i will lose all of my save data and there's a few games that i REALLY do not want to start over on...so i wanted to rebuild the database because i will not lose my save data doing it that way.
you can make a backup of all your game and save data if you want, the option is in the XMB.
I've gotta have a big enough usb thumb drive to be able to do that haha...my account isn't a PS Plus account, so i don't have access to the PS3's online storage...i'm pretty much stuck in between a rock and a hard place.
Buy a month of PS PLUS load all saves to the cloud and fix your machine. Dont open it up unless you are savy at fixing things and have lots of time.
Sorry to hear about the frustrations.
Some of your games saves have got to be locked, PS PLUS is the only way.OR buy a new hardrive and do a backup on an external FAT drive then do a fresh load to the new hardrive in the PS3. Right Guys?