I would agree with Vladmir (phcoder). Ubuntu tries to be a distro that non-tech-savy people can just plug in and use. That requires it to make some decisions for the user (such as automatically downloading security patches) which normal users really just don't care about.<br>
<br>If you don't want it to do <i>anything </i>without your permission, then Ubuntu is not the distro for you. I would recommend Arch Linux instead. However, be warned that even Arch has some regularly scheduled tasks set up automatically. They are all simple and harmless things like clearing old system log files, and they can be turned off fairly easily if you don't want them to run, but they are set to run by default.<br>
<br>If even that is too much automation for your tastes, then I'm afraid I can't offer any more advice. Short of compiling your own custom Linux from scratch, there is nothing out there that doesn't try to make the user's life easier by doing at least some things automatically.<br>
<br>Just keep in mind, the more control you want over your system, the more work you're going to have to do to keep it running.<br><br>Evan<br>