Recently, I started having this bug every time I used the polkit dialog (in maverick). After installing policykit-1 0.96-2ubuntu1.2 from james_w's PPA earlier today, it seems to be fixed.
Recently, I started having this bug every time I used the polkit dialog (in maverick). After installing policykit-1 0.96-2ubuntu1.2 from james_w's PPA earlier today, it seems to be fixed.