I am on slackware64 + multilib current and using XFCE only, so i blacklist kde packages using:
Code:
#slackpkg blacklist kde
This command add`s all kde packages and others, the polkit package.
I use this to keep the system without list new kde packages when i install new ones with slackpkg install new command.
After some update (recently PAM add i guess) polkit became necessary in Slackware without KDE.
Problems like permission in power off and mount USB thumb drives from a XFCE session were solved when i removed the polkit package from blacklist and installed it on my Slackware XFCE only machine.