After installing Ubuntu on my new Samsung Series 9 NP900X3A notebook, I was having massive problems with my wireless connection. The problem was, that the speed of the wireless connection was changing from full speed to transmitting nothing at all. After quite some googling and researching on the web, I found the solution.
and add the line:
options iwlagn 11n_disable=1
The wireless controller is from intel… after all, I’m quite happy with the new notebook…