Freeztah

I do actually have some bad experience with Acer, but thats an older laptop. I would definitely recommend Ubuntu as your Linux dist, I had no problem with it as my first Linux dist. I dont think you will get any problems with either AMD or the Dual Core

I could definitely recommend playing wow. If you arent afraid of getting addicted, you won't be disappointed of wow. It got everything, lots of quest, some (well maybe not too great) pvp, big PvE content and alot of things to discover. The world is bigger than you think at first

Honestly its a 10/10. Have been playing it for some time now and I really have to say it is almost perfect. Think blizzard though about everything to make people addicted