Did an update, which seems to have gone off well except for an error with postgresql not having a certificate, which I fixed.

Sadly, wifi no longer works. As I was doing the update through wifi, I know it was working until then. (It didn't break until reboot.)

Here's what I've tried:
update-rc.d -f dhcp3-server remove
update-rc.d -f apache2 remove
(which did remove some entries, but no luck)
sudo start-network
sudo /etc/init.d/networking start
After starting the network I do see interface lo and eth0, which I take to be the wired network, but nothing else (like, say, eth1).
sudo iwconfig
tells me neither lo nor eth0 has wireless extensions.

Google has failed me. Can anyone help? Thanks in advance.