Well, its the end of the day, and I unpacked my laptop to transfer some e-mail and do a bit of blog reading. Anyway, the first task when I get home is logging in to my wireless network. During the day I was hooked up to a wired network and I had disabled my wireless card (habit, some of my clients have strict security policies about wireless connectivity, and even things like mobile phones with integrated digital cameras).
Anyway, because I was locked down I couldn't enable my card, so I had to log out and log in as admin and enable it. Then Andrew Storrs pointed me to Aaron Margosis' blog. Thanks!