A page-monitoring web app for Mturk (Mechanical Turk) designed to make turking more efficient. Easily monitor mturk search pages and requesters and Auto-Accept the HITs you missed.
I have this same problem but I'm using Chrome. It happens to me when my computer wakes up from sleep. It fixes with a hard browser reboot.
Infinite loading on mturk pages
After maybe 10-20 mins of opening firefox it causes it all mturk pages to be stuck in an infinite loading loop, it effects working in batches cause after submitting it never loads the next hit. Closing and reopening the browser fixes it, but only for a short time.