Inspired by Paula's post...
You know, "logistical" is frequently used incorrectly. "Logistics" generally refers to the process of moving stuff around, like trucks, trains and ships. Before UPS and FedEx, it was specifically used as a military term. So "logistical" actually means "having to do with logistics," which is not the right use of the word.
Most of the time, people mean "logical."
Sorry, pet peeve. :) I used to work for a group of magazines dealing in logistics.