Wytze van der Raay

As far as I know, the permissions of /var/log/postgresql after a reboot are recreated from those on /var/log.hdd/postgresql. So if you modify those as well (remove the sticky bit), the workaround should be permanent. Thanks for highlighting this problem, I've encountered the very same issue, but didn't realize it was caused by this somewhat peculiar directory permission. So I just applied your workaround (plus my extension) and hope it will fix this once and for all.