Ubuntu has always been a bleeding edge distro, like Mandriva, Fedora, OpenSUSE and ... tadaaa... Debian unstable (aka Debian SID = Still In Development

). All of them ship usually with the latest kernel, with the latest KDE or Gnome, with the latest Firefox and so on. There is nothing wrong with developing bleeding edge distros, but using them for mission critical tasks is rather risky IMHO.
Ubuntu used SID as its basis. Sid is unstable. All the Ubuntu-devs can do is to try to maximize the stability of the unstable, bug-ridden SID packages. The result is an OS that is a compromise. Were Ubuntu really stable, then it would only receive minor bugfixes and security-patches. But it receives major updates, just like Mandriva, Fedora end the other bleeding edge distros.
There are some even less stable branches (mandriva cooker, fedora rawhide,...) but those are usually really only used for the development of the new system by coders and are never used by "mere mortals".
An enterprise-ready system would be something like Debian Stable or RHEL, which had more than enough bugs squashed out over a long period and gone through proper testing. Same with Windows. Vista has so many bugs that almost nobody wants to switch the enterprise-systems to Vista but happily stays with XP or 2003 until Vista can be defined as "relatively stable". (...or they switch to a stable Linux, BSD or Solaris system.

)
Bookmarks