I use the Saitek Pro Flight, but have borrowed a CH yoke for comparison, and find this problem occurs with both. The rudder deflects to the right and stays there. It also pulls nose-up. This happens without any manual input to the units. As such, it is impossible to taxi. Attempts at straightening the rudder are pointless, and the deflection recurrs.
The Saitek was working just fine until perhaps a week ago, when this started. I did not install any software at the time, and the only thing I added around that time was a GoFlight GF-46.
Because it happens with both CH and Saitek hardware, I assume this to be a FS9 problem. Messing with sensitivities and calibration are ineffective. I do have the latest FSUIPC payware installed, but have not assigned any hardware to it.
Does anyone recognize this behavior, and if so, did you find a solution?