>I'm experiencing periodic crashes of IE 10 on Win7 since the update. There is no pattern, no timing, so impossible to reproduce. I could go all day without a problem, then it just happens. My best guess is it's related to the keep-alive.

I don't think it's this site. I've been having intermittent freezing of IE for at least the last week on multiple sites. It seems to unfreeze given enough time (upwards of a minute).

I think this came in a Windows update.