I don't know if anyone has found this, but after I loaded PSPersonalize onto the memory stick and changed my backgrounds I encountered a problem. In THUG 2, at some points the game froze for 15 to 20 seconds after completing the goal and most recently my created character was wiped out. Don't get me wrong, I can still play the game but I have no character on the screen yet I am able to do tricks.
I have no idea if this is caused by PSPersonalize or is just a problem with the game. If anyone has the same problem or a solution please post.