Given that timekpr's development stopped and although it works with Oneiric but with a lot of limitations (requires GDM instead of LightDM, does not provide notifications etc) Nanny is the only parent control tool available for users. So it would be nice to have it fixed though as I understand it is something to do with Gnome's transition to gtk3 and gsettings and probably not that easy to fix.
Given that timekpr's development stopped and although it works with Oneiric but with a lot of limitations (requires GDM instead of LightDM, does not provide notifications etc) Nanny is the only parent control tool available for users. So it would be nice to have it fixed though as I understand it is something to do with Gnome's transition to gtk3 and gsettings and probably not that easy to fix.