I have tried looking for answers to this problem, and they all seem to revolve around my PSN. However, I cant connect my PS3 to the internet, nor have I logged into PSN since I started playing Skyrim.
Anyway, this is what happened:
Last night, my game froze, and after 10 minutes I gave up on it and decided I had to switch it off. When I turned it back on, it went through the usual 'checking corrupt data' thing when you switch off your PS3 mid game, however I found all of my data had been lost when I tried to load my game, and I had several errors.
So I fixed these errors, and got my data back by going into safe mode and doing "Restore Default Settings", then "Restore File System" and finally "Rebuild Database".
Everything was fixed aside from the fact that when I enter the game, and load my data, I get the message saying "This saved data is owned by another user. Trophies cannot be unlocked and saving will not be allowed."
As I said, I have not connected to PSN since I started playing Skyrim, now will I be able to connect to it for another few months. So is there a solution that doesn't involve having to use PSN.