I have got a strange problem her after I moved my site to a new domain. (WP 3.0.3)
Most things are working but when I write a new article and want to preview or publish it I get this error.
(The strange thing is if I press the wheel on my mouse on the preview button opening the article in a new tab, then it works ok.)
Also when I try to log in, the same thing is happening.
With all this I get a blank page in IE8 telling me:
This site may not display in Internet Explorer
You can try this:
Diagnose Connection Problems
and in FF:
using username: admin and password: admintest
Would appreciate all help on this!