I didn't have this issue in Ubuntu 12.04 LTS, but now I got this in 12.10.
$ redshift
Started Geoclue provider `Geoclue Master'.
Using provider `geoclue'.
Could not get location (3 retries left): Geoclue master client has no
usable Position providers.
Unable to get location from provider.
$ redshift -l gnome-clock
Cannot list GNOME panel applets.
Initialization of gnome-clock failed.
I didn't have this issue in Ubuntu 12.04 LTS, but now I got this in 12.10.
$ redshift
Started Geoclue provider `Geoclue Master'.
Using provider `geoclue'.
Could not get location (3 retries left): Geoclue master client has no
usable Position providers.
Unable to get location from provider.
$ redshift -l gnome-clock
Cannot list GNOME panel applets.
Initialization of gnome-clock failed.