What's the fastest free backup program for initial backup of everything on my Mac?

I'm upgrading from Tiger to Leopard.

I have an external hard drive to backup everything onto.

SuperDuper. Once you upgrade, you can use the free utility Time Machine, which comes with Leopard. Check out the sites below.

You can use Mozy to backup your personal data off-site with encryption.

Use this link to get 2.25 Gb for free for your backups:

https://mozy.com/?code=94HW8M

I am using for 2 years and is very good, and FREE.

Works on Mac.