I downloaded Noscript (firefox addon) and it works without problems, it is just that I only can see the application icon on the bottom's statusbar. I can see, for instance:
Forbid /allow A
Forbid / allow B
and so on, but I wont see any "S" incon at the left of any of the Forbid/allow lines.
I have deactivated it, even reinstalled it, but to not avail