Hi there

I'm comming in late here, but i will add my 2 cents. I have found in the past that when you have a secure encrypted WLAN connection set up on your laptop and then just go and turn off the security on the AP, the profile on your laptop still tries to apply the encrytion key as stored in is profile for that SSID. What seems to happen is the you can connect (authenticate and associate) but the laptop still sends the data encrypted ,as per the profile stored in the windows zero configuration utility and the AP doesn’t respond as it's encrption is off. To fix this in the past I have just gone into the wireless profiles and deleted the one for the access point and reconnected afresh and then all is fine.