kppp is actually a soft link: /usr/bin/kppp -> consolehelper
Consolehelper asks for root password and then executes
/sbin/kppp with root privileges. The problem is that, with
this security method, when you modify your kppp
configuration, you're NOT modifying
/root/.kde/share/config/kppprc and this file is overwritten
by *any* user with his/her own configuration.
fixed for next release.