...because it's not something I'm seeing. Because of that, I'm guessing it's a network glitch, which is going to be a real pain to track down since ISP's are not responsive at all these days. They generally have the attitude that you're lucky it works at all.

If I do start seeing a cause at the software end, I'll fix it almost immediately.

Btw, I'm going to see if I can add some kind of logging feature that can detect incomplete requests, but I'm not sure if it's possible yet (since over half that is browser side).