Comment 44 for bug 835833

I'm not sure, if I'd found the reason for this bug being around in recent releases, but IMHO it is a remnant from a release update: I had it on two systems which I upgraded from 12.10 to 13.04

It's gone now on both systems after doing some de-/installing, including a complete deinstallation of all parts of KDE (w/ reboot) and the new installation of KDE 4.10

To repeat myself: I just guess the solution is related to the complete re-installation of KDE.
I'd done a lot of changes on the installed packages (to get rid of strange problems with dolphin and KDE-systemsettings in Ubuntu/Unity) and just saw afterwards, that, together with the strange problems, the rpcbind error was gone.

Hope this helps someone!