WordPress 2.6 for some has been an upgrade nightmare. For me, I had no problems. But if you do experience problems with your permalinks, or experiencing 404 errors (this page does not exist) you can try the following steps as provided by WordPress Support.
Temporary fixes:
1. If you’re using Linux/Apache on your webserver, you don’t really [...]
I’m looking for better ways to restructure my Undebug.org blog without resorting to a clean Wordpress Installation and recreating it’s categories, tags, and permalink structure. I’ve done the same thing with my old personal blog but I didn’t import any of the old posts to the new one that you’re currently seeing now.
What I want [...]