Dryer Fire
Thankfully I have not had a fire because according to Consumer Reports I have dangerous flexible foil ducts that can snag lint and can catch fire. Any folks out there with dryers in their units or have tenants bring their own dryers should watch the video on the linked page:
http://www.consumerreports.org/cro/appliances/laundry-and-cleaning/clothes-dryers/reports/dryer-fire-caution/index.htm