Apr 21 18:15:22 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 462 was not found when attempting to remove it
Apr 21 18:15:22 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 48 was not found when attempting to remove it
Apr 21 18:15:22 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 48 was not found when attempting to remove it
Apr 21 18:15:25 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 469 was not found when attempting to remove it
Apr 21 18:15:25 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 86 was not found when attempting to remove it
Apr 21 18:15:25 xx console-kit-daemon[3357]: GLib-CRITICAL: Source ID 86 was not found when attempting to remove it
In my case it started happening immediately after the upgrade from 13.10 to 14.04.
Also affecting console-kit-daemon:
Apr 21 18:15:22 xx console- kit-daemon[ 3357]: GLib-CRITICAL: Source ID 462 was not found when attempting to remove it kit-daemon[ 3357]: GLib-CRITICAL: Source ID 48 was not found when attempting to remove it kit-daemon[ 3357]: GLib-CRITICAL: Source ID 48 was not found when attempting to remove it kit-daemon[ 3357]: GLib-CRITICAL: Source ID 469 was not found when attempting to remove it kit-daemon[ 3357]: GLib-CRITICAL: Source ID 86 was not found when attempting to remove it kit-daemon[ 3357]: GLib-CRITICAL: Source ID 86 was not found when attempting to remove it
Apr 21 18:15:22 xx console-
Apr 21 18:15:22 xx console-
Apr 21 18:15:25 xx console-
Apr 21 18:15:25 xx console-
Apr 21 18:15:25 xx console-
In my case it started happening immediately after the upgrade from 13.10 to 14.04.