As seems KDRC has some odd keyboard layout eg.:
I press "0" button result is 0e (if Win 2003 has EN layout) an ée (for CS)
Similarly "8" button => 8a (EN), áa (CS)
There are a lot of other problems. I tried to change Keyboard layout in Host
Configuration but without result. Outside KRDC I have no problem with keyboard.
At this state I can't use KRDC at all ;?(
Based on Urs Wolfer's advice (https://bugs.kde.org/show_bug.cgi?id=238397#c2) it was tested from konsole with the same result.
I think I have the same problem, but it may just be a similar one. I'm using the programmer-dvorak layout in gnome, but any keystrokes sent by the number keys come out wrong in a remote windows session. I presume this is because programmer-dvorak pairs the shifted characters differently from qwerty (e.g, shift+'&' = '%' on the qwerty '1' key).
My problem is a regression. It might be in one of the libs rdesktop depends on, but anyway, I'm certain this worked correctly before I upgraded some .deb packages that included rdesktop. I was able to fix this once by downgrading some packages. I will try to find the package versions where this is broken/fixed and post another comment here if I succeed.
I rebuilt the ubuntu package from the trunk branch in SVN and all the keys work now :) Disregard my preceding comment. I can't speak for the reporter's problem, but mine is solved.