lucy24 - 2:02 am on Nov 14, 2012 (gmt 0)

In some situations it will apparently wait for other stuff to load, whether you want it to or not.

:: off to paw through browser history, because I was reading about this less than 24 hours ago, and it came with colorful diagrams and everything ::

It's somewhere in the inmost depths of google Developers, if that rings any bells with anyone.