Please attach (do not paste into comments) the output of "lspci -vv". I'm guessing this is a ipw3945 wireless. If so, make sure you have the restricted-modules package installed. Most likely you want to run this command and reboot:
sudo apt-get install linux-generic ** Changed in: linux-source-2.6.20 (Ubuntu) Assignee: (unassigned) => Ben Collins Status: Unconfirmed => Needs Info -- 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