There must be. I just tried doing that command on my system, which doesn't even have KDE installed. I installed from an F12/XFCE Live CD spin, and here is what it wanted to remove. I wouldn't try the command I showed you.
Code:
Dependencies Resolved
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Package Arch Version Repository Size
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Removing:
NetworkManager-gnome i686 1:0.7.996-6.git20091021.fc12 installed 1.4 M
cups-pk-helper i686 0.0.4-9.fc12 installed 72 k
dejavu-sans-fonts noarch 2.30-2.fc12 installed 4.4 M
dejavu-sans-mono-fonts noarch 2.30-2.fc12 installed 1.0 M
dejavu-serif-fonts noarch 2.30-2.fc12 installed 2.3 M
gstreamer-ffmpeg i686 0.10.9-1.fc12 installed 454 k
gstreamer-plugins-good i686 0.10.17-3.fc12 installed 3.7 M
phonon-backend-xine i686 4.3.1-102.fc12 installed 396 k
polkit-gnome i686 0.95-0.git20090913.6.fc12 installed 279 k
Removing for dependencies:
cheese i686 2.28.1-1.fc12 installed 5.7 M
evolvotron i686 0.6.1-3.fc12 installed 2.1 M
farsight2 i686 0.0.16-1.fc12 installed 454 k
gdm i686 1:2.28.1-25.fc12 installed 4.3 M
gnome-session i686 2.28.0-2.fc12 installed 1.6 M
libpurple i686 2.6.4-2.fc12 installed 22 M
mozilla-vlc i686 1.0.3-1.fc12 installed 82 k
parole i686 0.1.99-1.fc12 installed 653 k
phonon i686 4.3.1-102.fc12 installed 427 k
pidgin i686 2.6.4-2.fc12 installed 2.8 M
plymouth-gdm-hooks i686 0.8.0-0.2009.29.09.19.fc12 installed 171
pulseaudio-gdm-hooks i686 0.9.21-1.fc12 installed 385
qt-devel i686 1:4.5.3-9.fc12 installed 27 M
qt-x11 i686 1:4.5.3-9.fc12 installed 41 M
quodlibet i686 2.1-3.fc12 installed 3.0 M
system-config-services noarch 0.99.41-1.fc12 installed 659 k
vlc i686 1.0.3-1.fc12 installed 4.7 M
xfce4-xfswitch-plugin i686 0.0.1-1.fc12 installed 41 k
Transaction Summary
=============================================================================================================================
Remove 27 Package(s)
Reinstall 0 Package(s)
Downgrade 0 Package(s)
Is this ok [y/N]: n
Exiting on user Command
Complete!
---------- Post added at 08:33 PM CST ---------- Previous post was at 07:54 PM CST ----------
If you installed KDE after you're initial Fedora install, it's possible to figure out the group of files that comprised the KDE installation at that time by doing a search of the yum log ( /var/log/yum.log ) and zeroing in on a specific Month/Day/Time and then removing just those files. If KDE was installed with your initial install, there's no sorting it out so easily.