After swapping around from campaign to campaign on my Linux box a few days ago; my games stopped loading and then finally Firefox crashed. Any time I try to go to Roll20.net it crashes. It will go to other websites just fine. Since I need the machine up for the moment I swapped over to Chrome, which worked just fine. I expect after I reboot the machine on the next cycle that Firefox will work again with Roll20. Just struck me as odd. Thus the FYI.