I installed the new driver 17.0.3 with the following results
5Ghz network: card works well, excellent speed, good stability
2.4 Ghz Network : card works evil low-speed data transfer, the card Centrino Advance N 6235 works at three times the speed of the AC 7260.
Intel has put into the sale a product that does not meet the specifications stated!
When Intel solves the problem!
My complete disappointment
I obtained better performance with driver 16-5-3-6 but was highly unstable