that is auto update
and if you JUST installed the older fedora 16 ( fedora 17 is current)
then auto update will want to install ?? about?? 3 gigs of updates
-- be warned support for 16 ENDS this January --
the default of looking for updates at boot
WILL take a bit of time
wait about 15 min. to 30 min.
run ( DO NOT forget the "blank space" then the DASH )
say yes ,and wait
depending on just HOW much is about to be installed and your connection
wait 2 hours
or 12 hours for the update to finish
then for gcc you will want the "Development group "
---------- from that list install ---------
yum groupinstall "Development Tools" "Development Libraries"
you might need others depending on just what you are doing