No shutdown or restart when using KDE desktop

[mark Pyles]

Hi everyone:

I am using Ubuntu 8.04 on a Dell Inspiron 1525 laptop and decided to 
switch my desktop environment to KDE from Gnome and I noticed that it 
keeps prompting me for a password for some nm-applet which I have no 
idea what it is and when I click on the shutdown button in the top right 
corner of my screen I have no option for shutdown or restart. Is there a 
way to get them back? If not then I'll just switch back to Gnome. Thanks.

Mark