well, i am a tech for a company and i do a lot of networking...mostly ADSL. i have read several threads/blogs about people starting to have this problem. what i have noticed is that there was an auto update from MAC on April 27, 2010, and i have been getting a 169 ip address ever since. i can go to PPPoE and manually put in an address like 192.168.1.150 and sometimes it will work. this problem started on April 27th with my Macbook. i also have a MAC desktop that still works fine in DHCP pulling a 192 ip addy, both using airport. my desktop didnt get the update. i have compared all of the settings i can find between the two machines, and cannot find a difference. if there is anyone who can help, it would be appreciated. as of now, i cannot even put in a PPPoE 192 address and get it to connect.