dpkg --purge kdebluetooth
(Reading database ... 476496 files and directories currently installed.)
Removing kdebluetooth ...
dpkg-divert: mismatch on divert-to
  when removing `diversion of /usr/bin/kdesktop_lock to /usr/bin/kdesktop_lock_nobt by kdebluetooth'
  found `diversion of /usr/bin/kdesktop_lock to /usr/bin/kdesktop_lock.orig by kdelock-knoppix'
dpkg: error processing kdebluetooth (--purge):
 subprocess post-removal script returned error exit status 2
Errors were encountered while processing:
 kdebluetooth