Many Ubuntu users like Automatix, but was never a fan myself, because I heard some bad stories.
I never used it, and advised people not to use it, telling them its a poorly made package and it might break your system.
I am not technical enough to give a inside information about Automatix, but luckily Matthew Garrett is, and gives a nice explanation about some the risks and weaknesses of Automatix.
So if you think of using Automatix for Ubuntu or Debian Etch , read it first.
Resources: Matthew Garrett.