I'm using Firefox 3, and I have intermittent problems with the graphics anomalies, and form fields.
The only consistent form field issue is that the page auto-scrolls up whenever the enter key is used while writing a post.  I have had 3 instances of other form field issues.  One time last night, the form field was only represented by a white table, no post controls at all.  The other two times, it had to do with the attachment field not showing the file that was browsed to, but the file did still upload as it should.  The graphics anomalies are random and inconsistent.