If you set debug-on-quit before invoking eww, then type C-g while it
> hangs, what does the backtrace show?

My emacs -Q session freezes as soon as I do M-x eww SITE RET
C-g does not help. I do see that the webpage started to load and I see "Contacting host: www.braveclojure.com:80" in the echo area.

I will trying "C-g"ing every few minutes this time before resorting to killing it from the terminal. But I doubt it will recover.

May be it's time to finally give a try to debug via gdb...