Say what you will about most users out there, but the points outlined below might just work if executed just right.
While I prefer allowing every user to customize his system, some managers may want to keep users from messing up a standard configuration. There are two basic approaches to this process. First, you can disable access to the key tools. Second, you can change ownership and permissions on associated configuration files to prevent changes by regular users.
( This article is excerpted from the recently published book Linux Annoyances for Geeks ISBN 0-596-00801-5. Copyright 2006 O’Reilly Media, Inc. All rights reserved.)
Disabling changes on KDE
The KDE desktop configuration is driven by both default and individual configuration files. Naturally, what you do depends on what you want to customize; do you want a standard desktop for just a few users or for every user on your network?
The default configuration files depend on the distribution…Source: Linux.com