pg_upgrade from V9.3.3 to V9.4.0

Hi all,

While we're not planning to migrate to the new version, I'm trying to gain some experience as the streaming replication
hasreally changed in this version and indicates future  
directions for it. My environment is virtualized CentO/S 6.5, and this particular server is the current primary, not a
standby.My problem is that the pg_upgrade is just hanging -  
for over an hour, before I killed it. I only see a "Verifying Cluster" message, and that's it. Even the 3 logs written
bypg_upgrade, don't really tell me any more. Am I trying to  
go too far with this upgrade? Do I need to bring it V9.3.4 first, or what? The behavior just seems a bit odd. I've only
runthis prior going from 9.2.2 to 9.3.3 and that had no issues. 
--
Jay