There are no errors in the logs that I can see. The upgrade completed successfully or so it said it did.
I'm running FC5 as a guest under F8xen, OSE 4.5.6 to 4.5.10 was attempted.
and yes, a reboot of the entire system was performed.
After the upgrade, zmcontrol status showed all services running.
I did try to create another admin account, using this example with my domain:
zmprov ca
testadmin@domain.com test123 zimbraIsAdminAccount TRUE
the error then was:
ERROR: account.NO_SUCH_DOMAIN
It seems either all accounts and domains were deleted or there is something wrong with the database.
I'm going to set the entire /opt directory aside if you want to see any data in it and I'm going to restore from a current backup and attempt the upgrade again when I get a chance.
Pete