I have a prior-gen Airport Extreme, with 802.11n 5ghz/2.4ghz. My ISP just bumped my speed and I've noticed a new, odd problem. I haven't found anything related to it when searching, so I'm hoping someone here may have some ideas. When I connect my Macbook Pro to the Airport via ethernet, my download speeds clock in at 110 mbit/s. When I connect my MBP via wifi, the speed drops to a consistent 60 mbit/s. Both of these limits are definitely upstream of the MBP; I measure the same ethernet speed from my desktop, and the same wifi speed from a Windows laptop. The odd thing is that the 60 mbit/s cap only seems to apply when I'm connecting to something on the internet. I can copy files locally over wifi at 160 mbit/s or faster. It seems like there's something specific about routing data from wifi out to the internet that slows things down on the Airport. I'm running the latest firmware, and IPv6 is disabled. I can definitely live with this situation, but I'm curious nonetheless. Does anyone know what might be going on, and how to address it?