This is SONY we're talking about here... who says the PSP will ever be bug free???
Seriously though most major bugs were ironed out of the Japanese ones quite some time ago, I have another friend who just picked one up cheap recently, after hearing there was defiantely no region lock on the games... he says except for a few miniscule specs of dust trapped under the screen, he sees no problems at all with his. If you ever chat on IRC it seems this is the rule now with Japanese ones.
Seriously though most major bugs were ironed out of the Japanese ones quite some time ago, I have another friend who just picked one up cheap recently, after hearing there was defiantely no region lock on the games... he says except for a few miniscule specs of dust trapped under the screen, he sees no problems at all with his. If you ever chat on IRC it seems this is the rule now with Japanese ones.