If you have an ubuntu system is better to upgrade the kernel as soon as possible
There is an known exploit in the wild ,my servers are already patched and rebooted

proper way to do an server upgrade from ubuntu feisty to gutsy
Read the guide on ubuntu.com

I wonder why the guide is not linked on the download/release page

to make my printer (hp4000) work on gutsy i had to boot an old ubuntu live cd 6.10 and test it there (add new printer )

with the folowing config Manufacturer Hp, Model 4000, Driver hpijs , Connection Part Port #1 (Epson)
the last line seems to be very important

Then i deleted my /etc/cups from gutsy and copied all the /etc/cups directory from 6.10

I will see later what is the difference between the two configs