yea, i noticed that login nag screen even after making a couple of posts. I'm using firefox 41 also. I have a firewall but I disabled that, I also have a IP monitor, and I've turned that off as well? ive tried firefox and IE and both do it. I have also tried it on my phone and tablet (android) same issues. however I may have found the issue. I am traveling right now and use the internet sharing from my phone hotspot. I do know that my provider blocks some websites, so its quite possible their blocking that part of this one. I've noticed that some of the java and scripts are hosted by other sites. But I wont be able to confirm this for a couple more weeks till I get home again.