I am a rabid user of Firefox, and have the 3.0.4. or had and now also has the now just recently downloaded 3.0.5. And have not experience such with my PM. If I understand what your saying. That if you open up a PM to someone on the board, you cannot type in the message box to send. Then no have not experience such, through I wonder why such would occur and if anyone else has experienced such. Even if doesn't have firefox.