To install fusion-icon:
You will need to install libpython2.5-devel, git-core, and xvinfo packages to build fusion-icon.
Next get fusion-icon by running in a terminal as user (this will get fusion-icon and decompress it):
git clone git://anangit.opencompositing.org/users/crdlb/fusion-icon
Next cd to the fusion-icon that it was just decompressed into (~/fusion-icon assuming you ran the git command while in ~).
As a user run
make clean
and then run
make
and finally run
make install
To run fusion-icon manually, open a user terminal and run
fusion-icon
If you want to make the icon start at startup, then in KDE add ~/fusion-icon/fusion-icon to your /~/.kde/Autostart or in GNOME add it under System-> Preferences -> Advanced -> Sessions
This information thanks to Gimped of the #mandriva irc channel