Fedora Core 1
Fedora Core 1 worked for me out-of-the-box. I believe it comes with the berlios drivers.
Unplug the WUSB11, run "dmesg -c" to clear the log, plug WUSB11 back in and run "dmesg". You should see new entries about USB device being plugged in, at76* driver being loaded, device being activated as wlan0 (or something similar). Run "/sbin/iwconfig" and you should see the new device (wlan0) there.