I'm having the exact same problem only on the index page everything else is fine. I have turned off all my plugins and tried using the default 2.0 theme and I get the exact same problem again. It seems to be that some of the style sheet is not getting applied. The style sheet is where is should be, I've changed the dynamic reference in my theme to a static refernce just to make sure and I'm getting the same problem.
I've done a db dump and installed it locally on our dev server and its getting the same problem here no matter what theme I run.
Interestingly I had not made any changes to the theme in several weeks and have not posted since yesterday afternoon when everything was fine. This morning its all funky. It is broken in all the browsers I have tested it on (FF 1.5, 1.6a, Opera, IE6, IE7b, Pocket IE, Safari). Nothing as changed server side either only my backup script running and ftping copies of the databases and all other sites down for storage.
When validating the pages now I also get a lot of spurious errors now after updating to 2.0 but why it should suddenly break after a week of been fine with 2.0 is a mystery. Can anyone shed any light on this? At least I know its not just me now so I assume its a WP problem and not a L.A.M.P issue...
Thanks in advance.