Ok here's the 3 shortcuts i use:
i had added this line (need to be root to be allowed changing the file):
alias upd="sudo yum -y update"
To update the yum db, should work as any user...
And finaly updating your single program with:
wich is the same as:
sudo yum update -y supertuxkart
The brackets around 'singlepackage' indicate that its optional..
So if you just run yum update, it updates everything.. and in most cases it updates the db first.
You see that when all the repos gets listed and its downloading something...
If you keep getting the same message, then there is NO update available.. simple.