Problem with SAS and Firefox in General Questions Posted October 8, 2014 Since about the time that I updated to Version 6.x.x, I have been suffering from Firefox slowing down. I was hoping that this was caused by the reported high CPU usage problem that was reported elsewhere, but I still have it with 6.0.1158. As my Firefox session goes on, SAS uses more CPU, and more IO, as reported by Task Manager. If I disable Real Time Protection, the problem goes away. At about the same time, I understand that Firefox changed the way that it deals with its cache. I am running Windows x64 8.1, with all the updates, and Firefox 32.0.3, as well as SAS 6.0.1158. Is anyone else suffering from this?