The townhome complex I live in recently installed new mail boxes - with new locks... which require new keys.
Well, apparently we received a note on our door informing us of this news. I did not see the note, but my roommates told me it said something to the effect of the following:
"Please come by the front office to pick up your new mail box keys. Our office hours are from 8:00am to 5:00pm. If you cannot come during these hours, we can mail you your new keys."