I just registered so I could reply regarding wireless on Acer. I found an easy solution to my Acer laptop wireless problem. For $13 I purchased an Airlink101 AWLL5088. I think it is the smallest USB N wireless device you can get. I've had it for 2 weeks and all my wireless issues have been resolved.
I wanted the smallest device possible because I want to simply keep the device permanently plugged into the laptop.
Dan
(I don't work for Acer or Airlink.)