Thanks. I also fixed the incorrect partitioning summary in this
situation.
partman-base (90ubuntu9) edgy; urgency=low
* definitions.sh: Initialise formatted_previously at the right time
(closes: Malone #66895).
* init.d/update_partitions, partman-commit: Restore IFS even if a disk has
** Changed in: partman-base (Ubuntu)
Importance: Undecided => High
Assignee: (unassigned) => Colin Watson
Status: Unconfirmed => Confirmed
Target: None => ubuntu-6.10
--
Ubiquity disappears if you have multiple disks and the last disk is empty
https://launchpad.net/bugs/6689
