5.3-BETA1 spews PaxHeader directories

I've just installed 5.3-BETA1/i386 from the ISOs distributed the other
week, and have found my file hierarchy littered with PaxHeader
directories.

I understand where they've come from, but new users may not, and they're
also unlikely to know whether they're safe to delete.

Ceri
-- 
It is not tinfoil, it is my new skin.  I am a robot.