Go2Linux posted a tutorial about upgrading from Debian GNU/Linux 5.0 to 6.0
As with the post of How to upgrade Debian Etch to Lenny, I actually know this may be know by a lot of people already, but here is how I did it, and if you ever forget can come here and remember it.How to upgrade Debian Lenny to Squeeze
Debian Squeeze is going to be released on February 5th or 6th this 2011, so I am updating this how-to a little bit