Why can?t I get root access?

[MrSvedberg]

Okey, before FRG83D I rooted my phone with SuperOneClick. Then I decided to go back to the original ROM, and update to FRG83D. As you know, this revoked my root access. So now I unlocked the bootloader and ran Superboot. However I don`t get rooted. My suspicions are that because my old Superuser apk is left, something goes wrong. Plz help me figure this out!