Doing more testing, and it def. seems to be tied to server load. Right now Tommy's at 14.14 load (Edit: now at 68) and the form's break reliably, with response times around 1s. I tried pre-loading some image files to cache them user-side but that doesn't seem to help, the response delay is still too high. Have you tried switchting to the httpd.conf method? I don't know enough about Apache/wsgi to tell if this could result in a speed gain. Edit: More testing. I'm observing a correlation with htaccess and related domains. If I reduce my ht-access to the bare minium, the waiting delays seem to improve.