when i use a combination of key-play / key-pause, the play-key toggles play...and the pause-key does exactly the same

when i use key-play-pause it seems to toggle a very short pause and then plays again (also indicated by osd) - fiddling around with repeat and delay-values did not help.
other keys like volume up/down, fullscreen, stop, quit seem to work without any problems.
i use vlc 0.9.2 on kubuntu hardy, remote+receiver: twinhan magic box with config file from the lirc-website.
anyone else facing this problem, any ideas?
thank you in advance.