ubuntu lucid, wicd.
i have a local wireless network with usb dongles, which all have the same mac address, so it's necessary to change these in different ones.
defining a hw address in /etc/network/interfaces, which works for the LAN, doesn't have effect.
neither using ifconfig.
when i tried macchanger, the wifi adapter was not recognized any more, even after un-installing macchanger.

(with it's own mac address a dongle is able to connect)
(with Windows this setup works perfectly).

any help is appreciated,