A new set of squeeze debian-installer images has appeared in the repositories (dated July 6 for i386, July 10 for amd64), and with these, the entire installation process functions flawlessly.
Bug #587570, I believe, can be closed. (I can't speak for bug #588183.) -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org