khotkeys will crash for existing users, but not for new ones. It simply erorrs out like such: chris@main ~ $ khotkeys ERROR: Communication problem with khotkeys, it probably crashed. chris@main ~ $ That's.. it. It relates to the following upstream bug: http://bugs.kde.org/show_bug.cgi?id=108712 attaching an strace log just in case, as gdb output seems useless.
Created attachment 73697 [details] strace.log
I managed to reproduce this with a fresh user too on amd64. Can't get any useful debug info from it.
Probably this happens because khotkeys is already running as a kded module and the standalone instance refuses to start giving a spurious error. Try for instance: $ dcop kded khotkeys quit $ khotkeys $ killall khotkeys $ dcop kded kded loadModule khotkeys $ khotkeys ERROR: Communication problem with khotkeys, it probably crashed. This is a minor annoyance, we can safely leave it to upstream...