Note: I am using this and definately this is a big improvement over the previous versions. Here is the blog from gnome blog:
After more than a year of heavy development, <a class="zem_slink freebase/en/networkmanager" title="NetworkManager" rel="homepage" href="http://www.gnome.org/projects/NetworkManager">NetworkManager 0.8 was unleashed on the world a few weeks ago. While we obviously couldn’t make everyone happy just yet, this release includes a ton of great stuff. Much of it is under the hood, so while it won’t dazzle you in a blinding flash of light, it should still make your head explode.