Actually, I've seen this in filemaker 10 also. In our case we had several filemaker windows open to several network shared files. Filemaker was taking the time to update all the underlying windows as well as the top window--being networked, some of the updates were driven by input from other clients on the net.
Closing the other windows, hiding them or simply switching those windows to blank layouts with empty found sets, reduced this issue for us.
Thanks, for your reply. I copied the file to the desktop to eliminate any problem via the network. It was the only file opened, and it still has the long delay before a type character will appear. Thanks, Gene