Sticky Buttons

firmware 3.10oe-a (upgraded to 3.40oe-a after problem started)

whenever im playing a game my psp will "glitch" and start pressing buttons randomly. most notibly the home button which asks me to quit the game, the screen brightness control and the volume buttons. this can happen only once or can randomly spaz out for as long as 5 minutes. it happens when im using either the d-pad or the analog nub. it has been getting steadily worse and has now started affecting the xmb. i was going through the "themes" menu and when i press down on the dpad it sometimes would freeze or start moving up the list while the volume kept increasing and the screen started getting brighter/dimmer

im not expecting any help with this as i have posted on several boards without a response but any help would be appreciated.

thank you