ive seen some and heard a lot of the square buttons makin noises. i think it has something to do with the button being so close to the screen? remember that design flaw in the square button.. about it being made differently? i dont know if its true or not but ive seen way too many people complain about the square button..somethings gotta be goin on with it.
if you look through you square button, do you see a metal piece in there? it is a shine metal piece... that button seems to be the only one with that piece in there... at least on mine it is there. do you guys have that too?
the square button is designed weird
it is does not have such a more solid "footing" on the pcb as the other buttons do.
this is because it is so close to the screen
apparently the designers made the square button like that to decrease the overall size of the psp
on earlier japanese 1.00 firmware psps (last december) the button was actually gettin stuck and makin clickin noises whehn u pressed it