Btw, if you continue to use the usb-loader, be aware: I had this same probem and when the game used all the space in system memory while in game and I then erased the dlc data (not the save game data) it, for some reason, allso erased all the saves and profiles... If I erased the data before memory was full, I had no problems. Now I'm using disc channel and it doesn't copy songs to system memory any more.