Installation plays hardball

[Bruno Wolff III]

On Sat, Jan 02, 2010 at 20:10:37 +1030,
  Tim <ignored_mailbox at yahoo.com.au> wrote:
> 
> The only advantage I found for using LVM on my laptop was encryption.  I
> could have the encompassing LVM volume encrypted, and as many partitions
> as I liked, and only have to unlock the outer container.  Using various
> ext3 partitions, I had to type in the password numerous times to boot up
> the computer.

You should have to do that. The password entered for the first encrypted
partition gets tried for other ones. Both in the initial part of the boot
and later when udev is running.