FC4: Problem with GPG signatures and reboot/shutdown

[Jim Lowman]

Recently I installed FC4 on an AMD64/3200+ based system,
using the X86_64 download.

When running Up2Date, I get a message on each package that
there is no GPG signature.

Also, and less troubling:  when I choose to shutdown or restart
from the GUI, I always need to reset or power off manually.

Any suggestions would be most appreciated.

Jim