any of you have a PSP and did you mod it?

i recently got a white psp with a 4GB mem card...

im loading all kinds of cool stuff but likee 1/3 of the games i load lock up..

and the remaining 2/3

well about 1/5 of those lock up randomly after 10minutes -and hour


i don't know why... you?"

and whats your favorite psp game?