Is Ubuntu Bigger than Debian now?
From the 'Is Debian's failure, Ubuntu's Linux success?' files:
This week's Jaunty Jackalope release was Ubuntu's 10th release and the 9th release that I've used myself. I first became aware of Ubuntu in 2005 with the 'Hoary Hedgehog' release for only one reason, Debian Sarge was AWOL.
Debian is the basis for Ubuntu, but in some ways you can argue that Ubuntu has at this point, exceeded Debian. The great 'failure' of Debian is also it's great strength. Debian hasn't been able to put out releases in a regularly scheduled format in years -- something developers will commonly attribute to not making a release until it's ready.
On the server, Ubuntu is now ramping its efforts too, which is an area where Mark Shuttleworth also sees a place where Ubuntu can exceed what Debian does.
"We see Debian as the system administrators choice," Shuttleworth said during a conference call announcing Jaunty. "And we see Ubuntu as bringing a level of corporate identity and backing to that platform which makes it acceptable and palatable in a large scale organizational environments."