I had my PSP on charge while playing with Virtua Tennis using fastloader (original UMD with 333Mhz option selected to lower loading times, same with World Snooker) and my PSP became really warm.
Not just the battery side but the whole unit, the screen was even emitting heat. Ive had my PSP since US launch and played all emulators and not 1 thing has made my PSP heat up so much, infact it's the first homebrew that has even drwan my attention to heat coming from the PSP.
Has anyone else had this problem with their PSP, I know that it is designed to run at a max of 333Mhz but this does seem strange. Oh BTW I was playin my PSP for around 5hours solid, that could potentially make a difference aswell because of heat from my hands warming up the casing, but still the heat was very excessive.