WIFI / DHCP bug after upgrading to OSX 10.7.3

as reported many times on the internet, it seems that there is a bug included in the newest OSX version 10.7.3 upgrade, which affect not all, but some MACs.

same happened on my Mac Book pro ( mid 2009 ) :-(

after the upgrade process and a post reboot, i couldn't get online with my WIFI connection anymore.
also plug in a network cable couldn't fix this issue. it seems like there are problems in getting an ip address.

the only way to FIX this problem is to restore the ( old ) /etc/authorization file.

i got an backup of this file in time machine and also in /etc/authorization~backup

after restoring the file ( from 10.7.2 or earlier ) and a reboot, everything works like a charm.

thanks to apple ( .. )