Snickersnack: I'm worried though. Steam sets a new precedent for common Linux distros. It will soon be very easy to fill your machine with proprietary binary only software. Now there's a popular outlet for it that requires no sysadmin skills and it comes with a free DRM system as a bonus. :/
Perhaps ive made deal with the devil, but hopefully it will atleast save me truckload of time:
Installed Ubuntu 12.10 and tried to install older specific versions of PostgreSQL + PostGIS -> couldnt find exactly what I wanted and the stuff I did find didnt actually work in the end despite all sudo's and nautilus'es i could pull out from my and my friends sleeves.
Gave up, tried to install newest version, but that too wasnt ment to be.
So after some 16h of googling and terminal wizardry (granted, toddler level), I uninstalled and put win8 in the machine and managed to install the correct versions on the comp I had wanted since beginning.
Ubuntu seems very promising and I believe it has lots of potential - but the constant root right/chmod type stuff is still very much there if you arent happy with what the software center offers you. Maybe kids will have time to pick it up and will do fine with the terminal - unfortunately may day has only 24h and week only 7 days. Simply dont have time to fight with different repos and missing libraries -> the apple-like "It just works" is very tempting for busy adult.
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On topic - I did install steam on Ubuntu as well, didnt have time to try out any games but I was happy with the little I saw
Lets see how the Steambox is going to turn out and if i have to start schooling my kids to do all the linux/ubuntu hocus-pocus for me.. ;)