My daughter brought me here PSP (3.71 M33-3) and said it was running really slow. I checked it out and it was and the screen was all jumpy. I finally figured out that in the recovery mode the unit was set to 20 during XMB rather than default 222 or 333 or whatever. That fixed it. She swore she did not go into those setting and would have no idea how to get there. No other setting where messed with. I beleive she did not cause I can tell when she is lying. So what would cause that to happen other than going in yourself changing those setting?