Comment 17 for bug 148968

I can confirm that this is usually related to copy/paste actions. I've seen suggestions elsewhere that shutting down clipboard managers like the KDE Klipper would help (the Gnome clipboard manager has also been mentioned). I'm currently running KDE on the client and server, and I've stopped Klipper on both ends. The frequency of crashes has indeed been reduced, but I just had another unprovoked crash with the same log message. Still, it might help as a temporary partial workaround if this is driving you nuts.