A few reports against gnome-power-manager show the very same backtrace, which confirms the bug is in libappindicator using GtkStatusIcon (whichever the culprit), not in gnome-settings-daemon. See bug 63334, and upstream report for "explanations".
A few reports against gnome-power-manager show the very same backtrace, which confirms the bug is in libappindicator using GtkStatusIcon (whichever the culprit), not in gnome-settings- daemon. See bug 63334, and upstream report for "explanations".