I've had the same problem with my Acer Aspire since the introduction of the .10 kernel. I have to stick with the .9 kernel to get online. Yesterday I did manage to get online using the .12 kernel but today I tried and Network Manager made no attempt to connect even though it could clearly see my wireless network.
-- Centrino wireless networking does not connect (herd 5) https://launchpad.net/bugs/89493 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
