Before I upgraded to M33 firmware I had no problems with POPS games (under 3.40 OE). But now it seems that M33 firmware has a lot of compatibility problems. I tried with 3.52 and 3.52 update 2, with all of the options for the POPS plugin supplied with update 2 and I still can't get known good games to boot. Actually it looks like at least part of the problem lies within the XMB itself since some games will show as 'Corrupted Data' where in 3.40 OE they showed up fine. Is anyone else having the same experience?