What version of Ubuntu are you using? Does it happen with a new user? Looks like http://bugzilla.gnome.org/show_bug.cgi?id=344936 which has been fixed upstream and to Ubuntu with a new version
What version of Ubuntu are you using? Does it happen with a new user? Looks like http:// bugzilla. gnome.org/ show_bug. cgi?id= 344936 which has been fixed upstream and to Ubuntu with a new version