I'm going to mark the thread solved, of course if you could find the relevant sections in the logs it would make for a nice wrap-up.
Can't say I'll dig too hard trying to repo, as a bunch has changed for 5.0, but it's good for our collective knowledge/history sake if anyone else encounters it and a trend develops.
Also paste the output of your zmcontrol -v and while your at it
http://www.zimbra.com/forums/announc...r-profile.html
BTW
ZCS 5.0 FOSS is Released!!!