This appears to be fixed for me in feisty. My T30's built-in minipci orinoco card can connect to my accesspoint with hostap. I'm posting this comment over said connection.
-- [Edgy regression] Hostap driver for PRISM2 wifi card not working any more https://launchpad.net/bugs/62685 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
