KDelayStart lets you specify some commands to launch when KDE is started and gives you a small delay to easily cancel their execution.
In concrete terms, it is useful if you usually want to automatically start applications like Kopete or Konversation, but don't sometimes (for example, because you don't want your contacts to see you connected when the clients autoconnect). You can also delay the launch of other applications like Compiz or Beryl if you don't need them.
1. Start kdelaystart and write some commands (one per line) in the configuration dialog
2. Set a number of seconds before the commands are executed
3. Add "kdelaystart --countdown" in "~/.kde/Autostart"
The next time you start KDE, you will see a small icon with a countdown in the system tray. If you click on this icon before the end of the countdown, the commands will not be executed.
-English (thanks to nosrednaekim)
If you want to translate KDelayStart in another language, please contact me at danakil_AT_gmail_DOT_com.