I've been searching high and low for a solution to this and I've seen a lot of similar posts but none seem to exactly match my situation and a lot of the suggested fixes do not work.
Basically, my wordpress blog will display nothing but the default start page. When I click on any categories, pages or archives it just redirects me back to the default page. The URL does change according to what I click on but the default page is always displayed.
When I attempt to goto /wp-admin I get a redirect and ultimately an Error 404 - Not Found. So at the moment I cannot log in.
I have tried the normal links for each post (i.e. http://www.freebiefacts.com/?p=3) but the pretty links don't work.
I recently upgraded to wordpress 2.6. I'm experiencing this on a couple of blogs that I run, both exhibiting exactly the same symptoms.
Any help would be much appreciated.