I think you have changed your account settings.
Navigate to settings(upper right corner) -> in the lest side menu click general settings, then scroll down and check in the Miscellaneous Options section the Message Editor Interface, if it is to basic then change it to standard.
Alex
---------- Post added 18-06-11 at 00:12 ---------- Previous post was 17-06-11 at 23:50 ----------
No it's not that either, I have checked your settings, the selected Message Editor Interface is "Show Standard Editor Toolbar".
When was this problem first noticed? (because there was a forum update a few days ago)
Did you try with a different browser, or a different PC/operating system?
Alex
P.S. you can also try to set the editor interface to Show Enhanced (WYSIWYG) to see if it makes any difference