As I recall, we did a permissions repair, which is something I would recommend prior to, and following most updates. I may have tweaked some things from the shell, but I don't recall. I know that after I did that, the installation just worked as it should.
Originally Posted by rlpiii
No. You do not need to format the hard drive. There is a simple fix to get admin rights back. I had one of my apple guru friends help me with it. I need to ask him again what we did and post it for you.