The only trouble with disabling all updates is that some of them address vulnerabilities that could let bad guys into your system.
At work we sometimes use Ubuntu, Fedora, and the paid version of Fedora, Red Hat. I personally have worked a lot with Tiny Core Linux for a customer. Tiny Core is pretty impressive for it's size. I have a complete development system with compilers, libraries, etc., and even a few games on a 4GB thumb drive with plenty of room left over.