Hi hi!
When I was using kermit to transfer files between AMIX and Linux, I had problems settling on a good serial port speed. I actually got the best results set to 38400, with 19200 and 9600 causing kermit to error out.
I think you should try different speeds, both faster and slower, as a result of my experience with it :-) It might just be my unique situation, but it couldn't hurt.