As soon as I restarted the system after installing the 10.7.3 update, my wifi stopped working. It wouldn't connect. It would get a private ip assigned to it.
So, I switched on and off the wifi, changed the network settings several times by removing the wifi and adding it again, restarted the system, and when all of these didn't help, I phoned Apple support. After asking me to fiddle with the router, computer and several other things, he accepted that the new update was having issues. And I needed to roll back to the old version. Has anyone run into the same problem? Is there anyway to fix this?