I was prompted by a thread on Timebomb2000 to check out the fire extinguishers around The Freehold. Much to my surprise and chagrin, I found that the one beside my bed had leaked out it's propellant. Time to replace that one. Also per that thread, I'm going to salvage the powder to use in the event of a chimney or frying pan fire. I'm not too sure I want to get that close to a burning chimney, but it would beat losing the house.
Check your extinguishers now.