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.