
SSID Broadcasting allows AirSniffing packets. And eventually cracking the WEP/WPA if the attacker is persistent enough. But it could take months on 128-bit anyway.
It doesn't surprize me, Vista is in it's early stages still. I've had some intresting disgustingly annoying errors with it as far as Printing / Networking / Email. Theres the stuck email in Outlook. That won't delete and requires a manually downloaded Hotfix, to repair. The fact that they dropped support for the All-In-One machine at my job, screwing them over big time. And this is one strike to add to the list for networking.
And Coldflame, you really don't want people snooping around your network without supervision. I've got too many sensitive files that I share among my machines, that cannot be accessed from the outside world.