hello. i have a macbook air, but this seems to apply to any mac's with airport. i connect once to our corporate wireless network, i type in the password and it connects. on occassions, when i start up the computer, it doesn't connect and a window pops up with my network listed but it says "none of your preferred networks are available" when i first connect i do check off remember this network. so why isn't it remembering it? seems airport is always flakey. when i go into system preference and click on network, select airport andc click on advanced, that network does appear under the preferred networks. does anyone know why its not letting me automatically connect the next time? sometimes its ok, sometimes it doesn't even know i connected to this network before.