My BB messenger used to display "Contact is typing a message" at the bottom of the conversation screen. Suddenly that is not showing up anymore and I'm not sure what I did. I would like to be able to see that while I'm in the conversation screen. It does still display a little talking cartoon bubble next to the Contact on the Contact List screen.
This is just a quirk that seems to happen from time to time. There is no setting or real solution to this. It won't stop you from being able to use BBM. You can try to do a battery pull. With the BB turned on, remove the battery for a few seconds, then put it back in.