iPhone wifi - after 2.2 Firmware upgrade

I found that I couldn't connect to wifi after doing the 2.2 firmware update. I didn't have time to mess with it and honestly didn't pay much attention to it for a few days. But when I couldn't update my apps (had 8 that needed updates) over 3G, I figured it was time to do some Googling. I found an article that said "this probably won't work but..." and referred to resetting network settings, resetting the phone itself, etc. I figured before tackling anything more serious, I'd try resetting the network settings. Amazingly enough, it worked. I had to put my WEP key back in and I'll have to do the same next time I go to work and connect to their wifi (slight bummer), but no major deal.