I upgraded my laptop (Toshiba M200, with integrated wifi-card) to Feisty too, and this works without problems.
So big change that this error is due to the driver, should I try to add rtl8187 (or r8187) to /etc/modprobe.d/blacklist on my Desktop-computer to see if this solves the error? -- (Feisty) NetworkManager makes system unusable, seems to have problem with dbus https://launchpad.net/bugs/83013 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs