I'm glad to announce that I just finished building the first powersave and kpowersave packages for Fedora Core 5.
In order to get KPowersave working properly, you need to have dbus-qt3 package. You can get this package from the update file section for Fedora Core 5 (https://sourceforge.net/project/showfiles.php?group_id=124576&package_id=176793&release_id=411568).
Unfortunatelly, I was only able to get powersave running if I disable SELinux completely or at least the related rule for acpi(d).
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