This is a diversion to the point being made. Facebook is a very different site, and could be lazy loading anything, and do you know the mouse move was causal?

This is a diversion to the point being made. Facebook is a very different site, and could be lazy loading anything, and do you know the mouse move was causal? was there a window.setTimeout initiating it?. Facebook is not a site i'd expect to use on a low bandwidth connection, or if I did I'd use a low bandwidth version if possible (like Gmail has a HTML only version).