I just bought an Acer V3-571G-6407 with Windows 8 and am finding that it periodically drops my connection to the WPA2-Enterprise / AES network I am normally connected to (I have not had the opportunity to try it on a different network). If I leave the computer sitting for a while, it will become disconnected from the network; Windows 8 has forgotten the connection settings and I have to re-enter the username and password. I do not experience this issue with any other devices, including a Windows 7 laptop and several Android devices, so I know the problem is on my end and not the network's.
I've also found this sometimes occurs when rebooting the computer. I'm very nervous because I just bought the system and I don't know for sure if the problem is with the hardware or Windows 8, but since Windows 8 is forgetting the connection settings it seems more likely to be on the OS end.
This problem is of course a massive inconvenience, particularly as I am still setting up the system and have an enormous amount of software to download (legally purchased software from Adobe, Steam, etc, not torrents). Currently I have to babysit the laptop and reconnect every time the connection drops; it's a huge hassle.