I have same problem on an IBM Thinkpad T30 with Prism2 (internal IBM "mini PCI" card) running hostap driver.
I see that NM disconnects from my WPA network with "sudo iwconfig wlan0 essid x mode managed", but then fails to connect to an unencrypted network -- in fact, it pretty much freezes the desktop. I lose keyboard, and notice that the Gnome system monitor status applets also freeze, I cannot open new windows (using Gnome applets). Only the mouse appears to work. I can sometimes turn the system off, but not always. In those cases when it failed to shut off after 30 seconds, I have not had the patience to wait to see if it will eventually turn off by itself. Actual system shutoff does not happen -- it says it will shutdown in the console after unmounting drives -- but this perhaps an unrelated bug: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/43961 https://bugs.launchpad.net/ubuntu/+source/linux- source-2.6.20/+bug/104741 -- Keyboard killed when using hostap_pci with NetworkManager https://bugs.launchpad.net/bugs/89464 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs