FCKEditor / ASP.NET / Firefox issue

My editor was working great with Firefox v2.0.0.11 and as soon as I got updated to 2.0.0.12 / 2.0.0.13 it won't work. By "wont' work" I mean that I get the textbox, I can see the formatting bar, I can enter and format the text, but when I submit, it enters an empty record in the database. It works perfectly using IE 6, IE 7, Safari on Windows and even Opera 9.27.

Any ideas?