Firefox 4 issues

Good afternoon,

It seems there are a few bugs and glitches when using Zoho CRM with the new Firefox 4 release.
Two I have are:-

i) trying to send an email to a new lead sometimes works but sometimes returns an unusable email screen. Basically you have to keep trying to email until the screen loads correctly.

ii) In CRM, Setup, Events, Edit Page Layout...the page layout details do not load.

I am running on Windows 7. IE 8.0 works fine and the last version of Firefox worked fine too.

I notice on the forum other Firefox 4 issues have also been reported elsewhere in Zoho apps.

What is Zoho's official response to these Firefox 4 issues to all of us heavy Zoho users?
Should we revert to another browser or previous browser version, or will these issues be fixed very soon?

Thank you for your time.

Best wishes,
Dave