Originally Posted by PTrenholme
I believe "Ubuntu" is, mostly, a repackaging of "Debian testing" with some additional "non-free" repositories containing programs that might not be legally installed in countries that permit software copyrights to be enforced.
Close... Ubuntu is made from snapshots of Sid which is the unstable branch of Debian, with some obvious modifications made by the Ubuntu team.. pretty much all the repositories come from Debian as well, including the non-free items.
Being based on the Debian unstable branch should ring some bells about stability and other bugs creeping in. packages in the unstable branch are two steps away from making it into Debian Stable.
Personally I don't see the mass attraction to Ubuntu.. but hey, to each his own.