phone not rooting (p500 v10b)

[noja]

I installed z4 root, selected temporary root, the thing went on for like 15 minutes and after that said "phone is rooted till next reboot" ; I tried set cpu, it said phone not rooted. wth?

[Sam]

do permanent root.

[noja]

how much phone memory does it take. how long will it take to root. please tell me how the phone reacts from the point I tap "permanent root" option till the completion of the whole operation. any precautions that I should be taking? hacking my psp seemed more easy.