I want to second the comments by jillesvangurp. I have not been able to get the new wysiwyg editor to work at all in FF1.5/2.0 or IE6/7. If my knowledge of PHP was better than rubbish I would attempt to fix the problem myself. However, I have faith in Matt and his crew that they will release a fix to this problem asap, especially as many people may use WordPress as an important communication tool with their clients.
