Thanks. But that is not the issue. The same password is actually getting me into the Password Keeper so I am obviously entering it correctly. And I have now tried many times using different variations, with no good result. Also I have talked to three other users around me who recently upgraded their Bold 9000's to OS 5, and they all have the same issue -- all their passwords are now inaccessible.
Looks like it is too late for me, but just for any others out there, make sure you have a copy of all your password data somewhere OUTSIDE of Password Keeper before upgrading to OS 5. Kind of defeats the purpose of keeping them safely encrypted though, so I sure wish someone would fix the issue.