Steam recently changed the default privacy settings for all users. This may impact tracking. Ensure your profile has the correct settings by following the guide on our forums.
It's a hardware issue. My friend had a similar problem and fixed it by opening up his PSP and reseating the d-pad. If your PSP is still under warranty it's better to send it over to Sony for repair.
My home button doesnt work sometimes, like if im playing a iso game I can't just click home and exit(the exit option comes up, but i can't move over to exit out of game) Plus on some ISO games my down button stays pressed. Is there something wrong with my directional buttons?