I use firefox, and sometimes videos that I watch in yotube executing very slowly then sometimes I get alert like this: "Some scripts in this video may make Adobe Flash player run slower, do you want to disable this scripts?". If I press yes, video stop executing totally and I see gray screen. I thing that in this videos would be some viruses, and so on, and generally it really make computer run very slow. Is there some way to disable scripts but not movie?
Thank you for ahead.