How often is is that you come across a simple tweak to your configuration file (/etc/hosts in this case) that claims to give you a noticeable performance increase, and with no discernable drawback?
I was psyched to try this one out and then I realized that I already had my hostname in /etc/hosts.
On a side note, I’m looking forward to the Ubuntu Feisty release, which is coming up in a couple of weeks…