When it happened again this time, I went and started killing processes until the dialog went away. As far as I understand now, the process responsible for this dialog is /usr/lib/kde4/libexec/polkit-kde-authentication-agent-1 .
When it happened again this time, I went and started killing processes until the dialog went away. As far as I understand now, the process responsible for this dialog is /usr/lib/ kde4/libexec/ polkit- kde-authenticat ion-agent- 1 .