kdeskto_lock issue

Debian Wheezy, Amd64, Nvidia quadro card, drivers from vender, dual monitors. In my .xsession-errors files I can see numerous entries: "tdecore] Deleting stale lockfile /tmp/tde-pabiVcZK3y/kdesktop_lock_lockfile" This crashes my X session, ~ 1 minute uptime, dumps me back to the login screen, totaly unworkable. I have been working around this issue because it only happens on 2 workstations with the same hardware specs, and drivers from Nvidia. I remove '/opt/trinity/bin/kdesktop_lock', I do not use screensaver or lock desktop, this works..until an update replaces the kdesktop_lock binary...this will stop eventually. I read bugs 2222 & 2230, re kdesktop_lock, I could run a backtrace if that would help and if someone could give directions on howto. I will file a bug with the backtrace. -- Peace, Greg