firefox is slow and javascripts on the most web sites is crashing. for example if I open facebook ? I see messages which script https://fbstatic-a.akamaihd.net/rsrc.php/v2/y5/r/QNxOsuxyVYx.js:27 doesn't answer, or in support.cdn.mozilla script https://support.cdn.mozilla.net/media/js/wiki-min.js?build=be7f51e:1 doesn't. This problems I see regulary in many web sites. I fully reinstall my firefox, but it isn't help me This problems I see only one my pc which I use Firefox.