At least on my machine, the latest Cygwin seems to break
comprehensively, with a SEGV when starting postmaster. It looks like
it is failing ion the code that looks for the highest settable FD, but
it's hard to say - the stack gets corrupted so getting a reliable
backtrace is hard. Can anyone confirm that this is not just my machine?
Warning - if you have a working Cygwin setup, don't just update it -
copy/move it before updating/reinstalling.
cheers
andrew