Comment 4 for bug 1020650

please, same issue with Dlink DWA-160 version B2 with rt5572 USB
=> usb stick is cheap and seems to be working fine on Win7 on dual band 2.4/5GHz (and NETGEAR WNDR4000 router)

It might be interesting to report to mainstream

side notes :
I have applied the current Ralink 2.613 linux drivers on Ubuntu 12.04.1 (3.2.0-35-generic) => I cannot connect to my netgear NETGEAR WNDR4000 wifi router!
BUT I can do dual band connexion with Win7/rt5572 and the same netgear 4000 wifi

more weird : Android (kernel 2.3.7) or Ubuntu 12.04.1 with wifi RTL8188CE cannot connect to a wifi router (a linux based DSL provider named "Free") but the Ubuntu 12.04.1 and rt5572 USB works pretty fine

=> there are ugly protocol issues in linux/drivers code, if I could help...