Well I would rather use Firefox, but the latest version has that bug with the "Attachement" issue...i.e can't send attachments.
So I am trying to use IE 6.0 until the next release of Zimbra comes out with the fix for Firefox.
However, when I go to the client login page, I get the silver background and that is it. Down in the bottom left of IE status bar is "Done" with a alert symbol. The error is as follows:
Error: 'Zmlogin' is undefined