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guys i'm facing this problem since this forum got about 12 less pages :-) in this time Intel moved resolution term from end of Q3 to end of Q4. My warranty ends in march 2014 this is the second quarter when i'm waiting for solution (samsung np550p5c windows 8.1 centrino 6235 ). My computer drops about 2% of transmission when 3 m from router. This behaviour shows up on half a dozen of routers that have been tested. It is almost not visible in normal internet connection but with VPN this is really annoying. I promised myself wait until end of Q4 and return device to samsung warranty service.
There is no more options that resolve this issue.
Oops sorry now it is Q1 seriously - Intel is playing with all of us.