Description of problem: Installation gives the opportunity to use a network login, but there isn't an opportunity to set up the network. I find that I have to reboot into rescue mode just to fix the network configuration to get a working installation.
For now, network configuration depends on your installation method. If you didn't do an installation requiring networking (say, you used a DVD) then anaconda does not configure the network for you. We already have a bug tracking fixing this, so I'm duping to that one. *** This bug has been marked as a duplicate of bug 572489 ***