Problems with DWA 7 and Firefox 1.5?

I don't know if this is just me but ever since I upgraded Firefox to 1.5 I have been having problems with DWA 7. I can't compose new emails and several view options are not working. Has anyone experienced the same issues and more importantly does anyone have a solution?

Update It appears that a few other people have come across the same issue (it also affects the web admin client). Apparently, according to Vowe, cross frame DOM browsing has been disabled. Although I would guess that the rich text editor does not use that so this might well be another issue.

Update Thanks to Christian for noting that "This problem has been fixed in Firefox and is not reproduceable with Firefox"