I've clicked on the ItaskNG several time and nuthing happens. It doesn't add a shelf to my desktop that I can see. There is something I see when I've opened and app though.. I don't want that floating around the desktop, so further investigation is required here.
Same here. ItaskNG has never worked, but I've never really needed it. But this is Linux! Where there's a will, there's a way.
One bit of weirdness I've run into with Agust's themes is the icon for the show desktop module shown in the left side of shelf1. The one I'm referring to is a four-paned grey icon, like window panes. I like transparency in panel 1. If I load a theme with that particular icon, then click the show desktop icon, the icon becomes transparent, and is no longer selectable. Maybe the png has a transparent background?
The theme I'm running now is an older one, A-SBlack Blue, because the show desktop icon is usable.