Ian Murdock comments Ubuntu Foundation and how it can relate to the Debian Core Consortium – and it doesn't relate very good.
You can read the blog entry at ZDNet here, and notice that Mr. Murdock is quoted for saying:
Debian is increasingly just another upstream source for them. Personally, I think this is a huge mistake on their partsure, they have lots of momentum, but that's largely because Debian seemed to be faltering for a little while. But now that sarge is out there, the real momentum is behind Debian again, though Ubuntu still has momentum on the desktop side. If I were them, I'd continue focusing on that. I certainly wouldn't be so eager to unhook from the Debian train just yet.