Fedora is dedicating this week to testing and improving NetworkManager.
Among the items that Fedora developers are requesting end-users help on testing is IPv6, network bonding, Networkmanager Hotspots, the KDE Plasma and GNOME applets, Bluetooth, DNSSEC, and FirewallD.
The Fedora networking test week is similar to the Fedora graphics test days
that the Linux distribution handles once per release cycle for improving a certain aspect of the Linux desktop. Even if you're not a faithful Fedora user, it's worthwhile to lend a hand and help out since the improvements made by Fedora / Red Hat end up being pushed upstream to the improve the mainline components being tested, which are then picked up by other distributions.
The Wiki pages for the relevant Fedora 18 networking test days are below.
2012-12-10 Network Manager and IPv6
2012-12-11 Network Manager and DNSSEC
2012-12-12 Network Manager and FirewallD