The issue earlier this week was caused by the recent change in the upload handler code. When you upload a torrent the tracker must be notified about it to be able to function, to connect the peers. Previously the torrent registering was part of the upload process, and that sometimes caused the upload page to time out. We've moved this to a background job, making the upload process much faster but it also introduced the problem. The background job handling was very simple and it could get stuck. That usually happened when no devs were around. We've added another a component to the system that supervises that background jobs and makes sure that the popcorns are passed around instantly.