MacBook Pro - Airport 'Connection Time Out'

[gcliv]

I'm troubleshooting a friend's MacBook Pro. She cannot connection to wireless networks - either the Airport dialog reports that the "Connection timed out" or it will connect and not receive a DHCP ip.

I've reset the SMC, repaired disk permissions, every combination of rebooting the computer/router on a couple different networks, checked for updates, removed all remembered networks, cleared the keychain of all stored airport passwords, etc. I was just about ready to declare that the Airport card was dead and hope that my local Apple Store carried a new one, but I had another idea. I plugged in an Ubuntu live cd, and it connected to the wifi just fine. I'm left to assume its something in OS X?

Any suggestions?

 

[dregnery]

Connection Timed Out Macbook Pro

Suddenly my daughter's Macbook Pro (O/S X) would not connect (after a year of trouble free access) to our wireless network. After trying several suggested fixes I went into my router's (Netgear N600) basic wireless setting and changed the channel to "auto" on the first band.