[X4U] Login window disappears before I can log in

[Signups]

Greetings all,

I've just installed the latest AirPort update (it lists in the Software 
Update log file as: Installed "AirPort Software" (4.2))

Now all of a sudden I'm unable to log into my Mac upon reboot.  I get 
the usual boot progress screen, which usually gets to the point of 
reporting that it is "Initializing Network", and then the boot progress 
screen disappears.  Usually this is followed by the appearance of the 
Login Window, but ever since I installed the airPort update, I no longer 
get the Login Window, but the screen remains blank forever (although the 
mouse works, and if I press the Power button, I get a window asking me 
if I want to Sleep, Reboot, etc. 

I'm running OS X 10.3.9, on a 900mhz iBook. 

I've discovered that if I turn off the wireless network in my house, 
that the Login Window will then appear on bootup.  So that's one way of 
fixing things... it would be better, though, to be able to boot with the 
wireless turned on, since other people in my house are frequently using 
the net.

Thanks for any help you folks may be able to offer.

Erik Norvelle
 Universidad de Navarra,
Pamplona, Spain