Ok i just bought a new 4gb memory stick from best buy and its not fake. It says supported and everything. I put disgaea on it and metal gear solid port ops. I'm still having the same problem with disgaea where when i try to save, sometimes it works and sometimes it just says checking for memory card and doesnt bring up the save screen. Then when i enter metal gear solid it does the psp intro thing then goes to a black screen and cuts off. I believe there is a problem with my psp and not the memory stick. The problem i was havin with my psp is on this thread http://forums.afterdawn.com/thread_view.cfm/577356 and I have done the chilly willy key thing and have downgraded and upgraded to 3.5m33-4 twice. Any help would be apreciated.