SSL youtube not supported

Hello. I have first mentioned about the problem in the review page of flashgot at mozilla. As per the advice of the developer I am posting it in this forum.

The problem is simple - flashgot was NOT showing blinking icon on re SSL youtube - https://youtube.com .

...AND NOW - it is not even showing up on regular youtube page- http://youtube.com .

I couldn't find out any possible reason on client side. Any clue?

version:1.5.51