I don't know if this is an issue beyond being annoying. I implemented a login system on a website. I uses a number of AJAX calls. For some reason, when I use firefug to debug it there are a few GET calls that have a progress bar that never stops spinning and there are no headers or responses shown for the call in firebug, but everything else seems to be working as designed.
I have included a couple of screen shots of the firebug output. Any idea why that might be?