the WYSIWYG editor stopped working with Firefox 1.0 Preview Release. I decided to do a (small) bit of work for you, Brandon, and found out the cause and very simple fix for the problem (see http://www.vbulletin.com/forum/bugs.php?do=view&bugid=3373)
Thanks. I went looking for this when 1.0PR first came out, but then never was able to find anything before I got sidetracked.
Should be fixed now.