krdc doesn't work with rdesktop 1.3.1. Yes this is problem but you can workaroud it by calling rdesktop directly. Now krdc conflict with rdesktop 1.3.1 and there is no rdesktop 1.3.2 (see http://www.rdesktop.org - 1.3.1 is latest stable version) so you can't workaroud it by calling rdesktop directly. This is much worse situation!!!
-- Petr Baláš (petr at balas dot cz)