My Powerbook really doesn't like this update. Soon as I installed the firmware update on my Extreme/Express, I lost my internet connection. I couldn't get the admin utility to let me leave it at WPA personal - it kept trying to do a hybrid mixture of WPA2 which is when everything stopped working. I could have internet and no Airtunes or Airtunes and no internet (and yes, the Express was still a client on the network so no clue why!)
I gave up in the end and reverted them both back to the earlier firmware. Problem solved...
I gave up in the end and reverted them both back to the earlier firmware. Problem solved...