Gnome: status line issue

[Miroslav Skoric <skoric@eunet.rs>]

Hi,

I am not sure now, but probably somewhere during the system upgrade from 
squeeze to wheezy, one of my machines somehow 'lost' the ability of the 
status line in Gnome GUI to show active programs, normal or [minimized]. 
What to do to recover that ability?

Regards,

M.