If you're like me and haven't updated your PS3 for a while, I just want to warn you that they seem to have removed some themes from the store, which has corrupted them on my console.
Last night I went to do a trophy sync, which forced me to update the system software. After it updated, the screen was black, but I could hear the game preview playing music on the XMB. When I pressed X it started the game, and everything was visible. “Seems like a problem with the XMB theme” I thought, restarting it in safe mode. Everything was visible again when I reset to default settings, but found that the cool animated theme I had plus a few others were corrupted. I guess they're gone forever :(
It turns out I just had to log back in and go into the Account Management menu and into the transaction history, that seemed to fix it! Happy days \(^o^)/