Ubuntu and Debian
Ubuntu caused a lot of friction with and for Debian. In discussions with its founder, Mark Shuttleworth, and other Ubuntu developers during (and before) Debconf6, I was able to spell out the main criticisms from the Debian perspectives of the way Canonical/Ubuntu is handling things.
These criticisms mainly stem from discussions with fellow developers over the past 18 months, and I largely support all of them. I am publicising them here to help make the status quo more transparent.
Before I go on, I want you to know that my neutral and somewhat even supportive stance towards Ubuntu has led many Debian folks to conclude that I must be a Canonical employee; I never was nor will be.