I run several blogs, all running happily on WP 2.6.3.
I updated one of them (default theme) to 2.8.2 in one go, after disabling the plugins of course.
This lead me into severe problems.
Accessing the index page runs intyo a redirect loo - similar to tjhe one mentioned in http://wordpress.org/support/topic/288845, but now on index.php.
Login is no problem, but at times, the admin dashboard doesn't show up; pages below may be empty (nothing between <head> and </head>, not between <body> and </body> (these tags show up). No error whatsoever; restarting the admin pages solves the issue, it seams.
When I revert to 2.6.3, all is well.
So the problem could well be within WP...
Anyone an idea to solve this?
I'm not a PHP expert but able to do some investigation and programming, when I know where to look...