By the way, I’ve been finally getting around to dealing with some of the random error conditions that lead to those dreaded endlessly spinning busy icons. For most things now, if there’s an error somewhere in the Ajax call that communicates from your browser to the server, it will simply turn off the spinner icon and continue on without hanging up.

This stuff is hard to test in some cases, but the newest jQuery has what’s called a “Promise” interface that makes it much easier and more straightforward to handle all kinds of errors.

Just thought you might like to know.