Sleek new interface, some interesting new additions, as well as the old standards. It's taking some getting used to, having to "double-click" to open the message.

I still get irritated with the button popups constantly overlapping and "popping up" when not wanted. Remousing over erases it... this has not changed.

I wanted to preface with that. A big flaw I found was after typing out a mail, hitting send, firefox has crashed every time. It does actually send it, I found, after doing it 3 times, 3 emails were in the sent folder.

I opened safari to try that - no crashes occurred during sending.