No way to show seconds in Gnome Classic clock

I cannot force clock in Gnome Classic to show seconds. Tried within dconf-editor, changing all available clock settings:

com > canonical > indicatior > datetime There I was trying by changing custom-time-format and setting time-format to custom and by checking show-seconds. Both does not work.

org > gnome > desktop > interface I turned clock-show-seconds on. Nothing happened.

org > gnome > gnome-panel > shell > clock show-seconds enabled, no reaction.

Also, I've been restarting system after each change.

Please, help - I need it for few things.

I'm using Ubuntu 12.04

This is an unusual issue - for myself, this works using dconf-editor

dconf-tools

Possibly you need to reinstall the package indicator-applet-complete

sudo apt-get purge indicator-applet-complete
sudo apt-get install indicator-applet-complete

logout and login and then use dconf-editor as described above.