I'm running 64bit Win 7 Pro - Firefox 64 talking across my own network to a Linux server at a static IP running IBM Cognos Analytics 11.12 After every report execution, Firefox hangs for then the yellow "A web page is slowing down your browser" Stop / Wait appear. I choose Stop and I can execute again. It would be nice to identify the offending page / script so that I could fix it. I could be a part of Cognos Analytics and then I'd have to deal with IBM support. Note: I do NOT get this behavior doing the same tasks with GOOGLE CHROME. But since I really don't like Google Spyware, I'd rather have Firefox work correctly. Firefox doesn't crash, it just hangs waiting for the page to finish (time out?) or me to select STOP.