Im having a similar problem, and tried all youve suggested. Different browsers, IE and Firefox shows the same.
This has happened twice in the past 6 months.
The blog seems to be fine, its the admin area (dashboard) that gets scrambled.
For example, to make a post, only the HTML option is available, I cant switch over to the graphic option to make posts.
All the options are down the left hand side, and only text, not the normal drop-down java look.
The middle (graphic-drag into position interface) isnt there, its also on the left hand side too.
The top header in the dashboard, is only gray.
I am using 2.9.2 version, uninstalled it to try to fix it, and reinstalled it, but it did not fix it.
I dont know how else to describe it, but cant make posts like this, need help please.
The basic site is fine, its just the admin area thats hosed.
thanks
p.s. I dont know if this is related, or if my site was hacked, but everytime I go to log in to make a post from the admin login page, my virus checker shows a popup, blocking this domain and ip address.
kdjkfjskdfjlskdjf.com/kp.php
91.188.59.98:80
which shows in the status bar at the bottom, is this address any clue that Ive been hacked?
then as I go to each page in the blog admin area, the address keeps popping up from my virus checker.
Dont know if its related, just wanted to cover all areas.
Thanks