There was a question about hostname in FC, namely that the router did not show the name of the linux machine on the router DHCP table. In my setup (FC3, linksys router), I made the following change: Go to
System Settings -> network
and then select your interface. I have wired and wireless. I picked the wireless and selected edit. I then changed the DHCP hostname to my computer name and saved. I restarted the network and voila - They name was visible in the router DHCP table.
HTH, Partha