On -current, with a natively built Firefox, Firefox occasionally wedges
completely, CPU-looping, for quite a while, then comes back.  5-10 seconds
minimum; I've seen a minute.

Some pages will impose a 2-second or longer delay during which the entire X
server is wedged; no keyboard processing or anything.

This doesn't happen on any non-NetBSD platforms, but only Firefox does it.  Is
anyone else seeing anything like this?

-s