On Monday I hooked up to a new Airport Extreme. I set up a wireless network for my Macbook Pro and used ethernet to connect both my and my wife's iMacs. All went well and was easy to do. Macbook Pro connects and speeds good. Can also sit out in the yard and connect with our iPod Touches. Life is/was good until this morning. Turned on my Macbook and tried to surf ..... like surfing in molasses. ALL sites slow!! Ok what was Shaw up to now I thought. Turned on my iMac and the speed was as fast as ever. Did some speed tests at Speednet:
might also help to use a wi-fi 'sniffer' to see what else is in your 'hood... it could just be someone else using the same wi-fi channel as you... in any case i'd set the AE to use a single channel that you know is clear of others in your area.
Airport Utility
Manual Setup
Select Wireless
Then Wireless Options
Add Checkmark to 5 GHz Network Name
Select Country
Check mark in Use Wide Channels
Select DONE
I then changed the channels on both the 2.4 and 5 GHz networks to ones that are not used by other networks in my area.
I then connected my Macbook Pro to that 5 GHz network. My iPod Touch only sees the 2.4 GHz network.