Repeated characters typing during MRC session

Dear sirs,

We are evaluating MRC, establishing a session to a client-computer, then establishing a session from that computer to a second computer causes characters typed to be repeated, it is very difficult to get typed text right since the backspace is often repeated too.

What can be done to solve this problem?

Additional data:

First session: MRC 9.01.247 64-bit

Second session: MRC 7.5.9.0 32-bit