I recently upgraded my Roadrunner cable service to "Premium", 20mb down/1mb up. Previously I was at 8/512k. When I had 8/512, speedtest.net regularly showed I was getting very close to 8mb down, wirelessly, via my 12" Powerbook (802.11g) through the AEBS (802.11n in G compatibility mode)...in other words, very little loss of throughput. It was almost as if I was hard wired right to the modem. Life was good. Life is still good, but I wonder if it could be better. Now that I've upgraded to 20mb service (which connects at around 18-19mb via direct connection), my speedtest results on the Powerbook max out in the 8-12mb range, from the same place in the house as my pre-upgrade tests. Not slow by any stretch, but obviously not as fast as hardwired. Strangely, to me anyway, the wireless upload speed (just under 1mb) is nearly identical to that of my hardwired desktop. This seems to suggest the wireless connection is fairly solid. I've deleted the airport plist on the Powerbook, changed the channel on the router, changed security from WPA to WPA/WPA2. Are there any other tweaks I might try, or is this the best performance I can expect? I was under the impression that the AEBS in G mode was good for up to 35mb. Thanks.