"As I write this article, I’m using a program that disables my network connections for a selected amount of time and does not allow me to switch them back on, thereby forcing me to actually write instead of checking my e-mail or reading blogs."<p>That's from a pretty interesting article in The Atlantic( http://www.theatlantic.com/doc/200811/multiple-personalities ). Anyone know which programs are able to do that, I guess for all three major OS(Mac, Windows, Linux)?<p>Thanks