I had version 2.6.x? of WordPress and did an update to 3.0.1. That wiped out the viewable content of my client's site. I worked with a developer to make a fairly customized blog site... He hasn't returned my emails so now I'm kind of stuck trying to work it out.
Check it out: http://askgavino.com/
I'm fairly technical (data analyst) but I don't know PHP. It seems to me the update changed where things were in my custom theme.
If someone can give me a checklist of things to look for to even get started trying to figure out what went wrong, I would appreciate it.
If you want to work with me to fix, send me a nice email and your phone number and I'll give you a login to take a look 'under the hood' and of course, pay you.. I just need to get the site working again.