with that being said, I got the PSP 3001 Piano black edition and a copy of Dissidia Final Fantasy. Every time I battle for awhile, the home menu comes up, even if I don't press the button. It'll even do it on its own, without me touching any buttons (like during the cutscenes for example). It played just fine the first night I had it, and then suddenly out of nowhere this happens.

The weird thing is, it doesn't pop up the home menu screen when in my web browser, or other UMD-based PSP games.
So what could be the problem here? note that the home button is not stuck down, my control stick does work, I didn't drop it, etc etc etc. Oh yeah, if it matters I'm running PSP firmware 6.20 right now.