Another interesting problem I seem to have stumbled across, although I'm not sure its peculiar to OZ, but I haven't been able to duplicate the symptoms on the sharp roms.
Attempting to connect to a wireless AP using WEP produces less than desireable results: In the Network -> Start/Stop (wlan0) -> 802.11b tab The ESSID tab flashes with the name of the AP and a random string of characters, DHCP does not discover, and setting a manual IP does not work.
Turning WEP off on the AP and rebooting the Z does the trick, DHCP discovers, an IP is assigned and networking functions normally.
Is there a problem with WEP support in OZ? If not, have I done something wrong? I did notice that there is no option for choosing between 64bit and 128bit WEP key lengths.