The specification does not state it yet, but it has been suggested that the maximum time any cache entry can persist in the preflight result cache should be 86400 seconds (i.e. 24 hours). It still seems rather low to me. If people still think we should limit it to this I will make it a recommendation in the specification (i.e. a should-level requirement).
-- Anne van Kesteren <http://annevankesteren.nl/> <http://www.opera.com/>
