Apache w/FPM: workaround for pages hanging and becoming completely unresponsive.
Reported by Thoraxx.
And yeah, it would be better if users would reconfigure their fcgi proxy and
tweak apache conf with flushpackets=on but I think it is "too difficult" for
users. Ideally we would detect the condition and error or warn, but.. yeah...
if anyone has a better idea, or knows of a PHP trick to force flushpackets=on
at runtime, tell me :D