I never had much in the way of wifi or touchpad issues. Although just in case I followed the advice of the linked thread and disabled some stuff (which I wasnt using anyway) and fiddled with some settings.
From what I remember from the thread (it's been a few months) the intel proset software driver software was a big buggy (which I never used anyway). I think the bluetooth might have given some people issues, but since I never used it I disabled it anyway. Finally there were a few pointless keypad settings that I changed/disabled because I didnt need them and they sometimes got in the way.
But I havent really had any issues with this computer aside from the standard bloatware on arrival. My biggest complaint is probably the lack of a mute button.