Was everything ok with Firefox before i tryed to install Google Chrome and Vettle Web Player. Firefox with Vettle as so slow so this is the reason i tryed to test other browser. I didn't like the result and i uninstalled Chrome and Vettle. So, since this, Firefox crashes after load anyone page. Firefox site, news site, email page... All sites i try to open Firefox crashes. I just uninstalled without save plugins but the problem persists. I'm using IE to write this.