<A target="_blank" href="http://www.andypedisich.com/blogs/andysblog.nsf/dx/domino-shutdown-to-release-8.5.2-upgrade-plus-traveler-8.5.2-and-startup-13-minutes.htm">Andy Pedisich apparently got out his stopwatch and timed the upgrade</A>. He's included some screen shots as proof.