I totally messed up my site doing the upgrade from 2.5.1 to 2.6.  I have not been able to login or anything for a while.  I have been too busy at work to do anything about it as well.  Finally I decided to do something about it.  After trying a bunch of things in the forums, I resigned my self to backing up the database and installing 2.6.1 clean and then importing all my old posts and comments.  Luckily once I decided to follow that path, things went smoother.  I have been making posts (all right only 2) on my company website community.bamboosolutions.com.  We have been having contests to see who draws more readership.  I have not been doing well so far.