This bug needs to be reported upstream... In the meantime, there is a workaround:
zcat [gzipped pacct file] | lastcomm -f - Mathieu Trudel mathieu...@gmail.com -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org