" Correct a timeout problem within proxy which would force long
or slow POST requests to close after 300 seconds.
[Martin Lichtin <martin lichtin.net>, Brian Bothwell
That´s a bug fixed since 1.3.25.
I´m preparing to upgrade to 1.3.31, but this issue is boring my users
(and me, of course...), so I want to solve or workaround this before