An issue with the mode toggling. Either in Full or Lite mode, does not matter.
Example Full Mode:
Open an new message, keep it open
Switch to Lite Mode (Cancel the save alert)
The Toggle shows “Full” because you cancelled and you do not leave the mode. But when you want to switch again, “Lite mode” is already checked in the list and “Full mode” should be checked as I am in Full mode now.
Appears also in Lite mode when cancelling a save alert.
Firefox 3.0.1