Best way to clone an installation (copying to identical hardware)

Kind-of like this question but slightly different (I think), in that I have 6 identical Acer Aspire Revo R3610 machines. One is (almost) configured to my requirements - when I'm done preparing it I'd like to make the other 5 machines absolutely the same. I'm very new to Ubuntu, what's the most straightforward (easiest) way of doing this?

The machines are going to live on different networks if that might otherwise be a problem (eg with Windows you can clone disks but you then have to make registry changes afterwards if they're going to run on the same network etc). The hardware in all 6 machines is, I stress, the same!

How can I efficiently clone one source image on to these identical machines?

Please restrict one software/solution per answer

Clonezilla sounds like it fits your needs

dd

A low level copy using dd would do the trick!

Watch out for conflicting IP addresses and hostnames.

Basically put the source drive and destination drive in the same machine, boot into a live cd. And run something like the following where /dev/sda is the source and /dev/sdb is the destination:

dd if=/dev/sda of=/dev/sdb bs=4096

I remember the operands by:

if -> input file

of -> output file

bs -> block size (how many bytes to read at a time)