Like when im playing Initial D or something, the car just suddenly turns right, and same with other games like GTA the guy moves right, it stops sometimes then does it again, is there anyway to fix it? or to just simply disable the analog?

well did u did anything to your psp? drop it, get it wet, etc?

my psp did that when the analog broke. i just took my psp apart and put a replacement analog in. you can get a new one on ebay for about ten bucks. i dont know if that helps but its worth a try.

might be a displaced contact point on the analog. i suggest having a pro look at it if you're not so sure you can fix it on your own. there's always the risk of creating more damage if you take it apart on your own, unless you're confident that you're qualified to do so...

My analog nub fell off a few months ago, my thumb has a callus on it from using it so much XD

But other than that, I haven't had any real problems...

just like zman wrote there real cheap plus you can get a install guide on the net.