Ryanair B738 near Zurich on Feb 6th 2012, loss of cabin pressure
A Ryanair Boeing 737-800, registration EI-DCK performing flight FR-4523 from Milan Bergamo (Italy) to Brussels Charleroi (Belgium), was climbing through FL360 out of Bergamo about 40nm southeast of Zurich (Switzerland) when the crew donned their oxygen masks and initiated an emergency descent to FL100 (average sinkrate about 4300 feet/min) reporting a rapid decompression of their aircraft. The aircraft continued on FL100, later FL080 to destination for a safe landing on Charleroi's runway 25 about one hour after initiating the emergency descent.
Source : Avherald.com
1 hour unpressurized looks quite interesting. Safest/best course of actions ?