A few months ago Firefox starts stalling my computer every time Netflix loads a new video. It feels like it coincided with Netflix switching to HTML5 which also feels like it coincided with an update of Firefox but I think that may because they added HTML5 support or something. This is incredibly annoying and I tried to contact Netflix support but they don't seem to have the technical know-how to be of help. The stall lasts about 10 seconds which is quite annoying as you may imagine.