Hmm jeg har ikke arbejdet så meget med ubuntu som server, men den store forskel jeg fandt var at serveren ikke har så mange ting installeret per default, det gør self at den kan kører hurtigere men også at du kan risikere at der er flere ting der ikke virker eller skal installeres.
What's the difference between desktop and server?
* The first difference is in the CD contents. I hope that the desktop version doesn't need an explanation, while the "Server" CD instead of having packages like X, Gnome or KDE has that can be useful on a server: Apache2, Bind9 and so on. Using a Desktop CD with a minimal installation and installing, for example, apache2 from the network, one can obtain the exact same result that can be obtained by inserting the Server CD and installing apache2 from the cd-rom.
* The Ubuntu Server Edition installation process is slightly different then the Desktop Edition. Since by default Ubuntu Server doesn't have a GUI the process is menu driven, very similar to the Alternate CD installation process.
* Ubuntu server install by default a server optimized kernel.
* Ubuntu Desktop will receive a 3 years support, Ubuntu Server will be supported for 5 years.