OK, so it's not actually Puppet installs that do it for me... it's openssh-server (which I was installing alongside it). Nothing like an assumption to ruin your day...
At any rate, the symptoms are still substantively the same -- preseeded install, a hang at "Running preseed", the error "/usr/share/debconf/confmodule: line 42: 3: Bad file descriptor", and a zombied dpkg-preconfigure. Happily, though, it would appear that pkgsel/include (which I've only just found) works around the problem nicely, and as such it could be argued that this bug, as currently manifest, isn't all that important. Whether it causes (or has the potential to cause) hassle in other circumstances I couldn't say, though. - Matt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org