And it's not just me: http://www.boonex.com/forums/?action=goto&topic_id=Tiny-MCE-HELP-
It happens SOMETIMES in blogs, emails, anywhere TinyMCE is used. the subscript and superscipt buttons are highlighted grey, like they're already activated, and you cannot type inside the text area. This is REALLY annoying and unprofessional, especially with a tool that is used throughout the WHOLE site. What is causing this? If you refresh the page, sometimes, once, sometimes many times, it will eventually work. The problem is, who wants to go to all that effort to post something? I'd like to see this addressed.