Well, with all the drizzly weather in Oregon, I just claim that it takes a long time to dry the prints. Here's my suggestion for the schedule:
Jan 2012 - Sign-in
Feb 2012 - print and squeegee
Mar 2012 - drying
Nov 2012 - still drying
Dec 2012 - wipe off the mold and send.
Good prints are like cheese - they just get better (or stinkier) with age.