just one little bit to add to that,you may have to try and use a few root only apps before trying to clear data from superuser. most folks report the clear data button being greyed out and inaccessible until theyve tried to run a few root apps.
after clearing data,it has worked for everyone,as far as i know.
if su is not in your app drawer,its no biggie... you can just flash it as sdraw described. the important part of the process,really,is getting the recovery.
The Delivery Guy
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