I saw Google Authenticator had an update this morning and thought "haha, wouldn't it be awful if it deleted the accounts when I updated!" Well, I guess I'm the goat [1].

I was still signed into Google so that was easy enough to generate a new key, but I believe I'm going to have to use my backup number to get into Dropbox.

[1] http://en.wikipedia.org/wiki/Duck!_Rabbit,_Duck%21