I have used Gnome for such a long time that all my emails are stored in the .evolution configuration folder. With a default Kubuntu installation Evolution is obviously not installed because it is a Gnome application. This is not a problem, as you can do a single apt-get command to install Evolution and all associated Gnome dependencies. The Ubuntu repositories are set up extremely well, and most of the time all dependencies will resolve perfectly.
sudo apt-get install evolution 
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In gnome you would go to your administration tab, and the users manager; but in KDE is a little different. First go to your KDE button, then system settings. Then click users management. Then click the button at the bottom right corner that says administrator mode. Then to add a user to a group click the groups tab. Select the group that you want to add a user to, and click modify. You will be able to add users to the group now.
Overall the process of graphical User Management is a little different on KDE as compared to Gnome. A user comfortable with Gnome will definitely be thrown off at first.
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For a year now I have been using a Gnome desktop environment. KDE is now in place and I’m finding it refreshing. Its mouse events trigger slightly different, and KDE seems to operate with increased performance on my particular HP DV2000 hardware. My favorite KDE applet it kpowersave; it allows for easy frequency scaling. I also like the look and feel of knetwork manager as compared to network manger for gnome. Overall KDE has a increasingly glass like interface and a luxurious overtone.
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