I recently tried installing Academix, a Linux distro aimed at schools and universities. The graphical installer seemed to work fine except that it would hang up whenever it got to the stage of configuring the network. It was able to correctly connect to Wi-Fi when given the Wi-Fi password during the install, but never moved beyond that.
This problem was surprising to me, because when trying it out on live media I never had any problems with network connectivity. So I was blindsided by this issue coming up when installing. I reasoned that if I was having those problems, maybe others were too, and so I contacted the developers to ask how I should proceed.
I received a very nice response quite quickly, mentioning that in my situation it would be best to install without a network and add it in later. For me, that meant specifying my wired connection (which wasn't connected) instead of Wi-Fi during the install. It couldn't establish a connection, but fortunately was still able to continue the installation without a network.
After the install, I was able to add the Wi-Fi via the GUI, simply by clicking on the Wi-Fi symbol on the desktop. At this point, I had a working installation of Academix! It's a very beautiful and modern-looking distro, and it was pretty fast on the old laptop I had.
To sum up, if you are installing Academix (or any Linux distro) that hangs at configuring network, then you may wish to install with no network initially and then add your Wi-Fi connection via the desktop GUI after installation of the distro.