I personally use Ubuntu 16.04 as my main computer, and I wouldn't quite recommend it because there are some rough edges. I would suggest you get Ubuntu 14.04 or the latest version of Linux Mint. If you're on older hardware, you probably want to use Lubuntu or the LXDE version of Mint.
Also, when does the netbook segfault? It could be an issue with the neko library. There was a recent thread where somebody had issues because neko was broken. I had this issue too, and I just removed and reinstalled haxe.
I have never owned a Mac, so I can't say anything there.