the first time that I start firefox noscript does not work

[ivo]

the first time that I start firefox noscript does not work correctly
the first time, I do not see the icon "S" but the sites are properly locked and can not unlock
if I restart firefox, noscript works correctly: reappears the icons "S" and I'm able to unlock the pages

[Giorgio Maone]

Does it happen every time you install NoScript or just happened once?
Maybe it's an extension conflict and Standard Diagnostic may help.