It reports (on DB upgrade screen): "[Executed: Finish Upgrade DB to 4.3.8]"
We let it run for over over an hour; stayed stuck.
A previous attempt got stuck at v.4.4.3.
(This upgrade is being attempted first on a DEV install, too.)
We've read many forum posts about this issue, here and on CiviCRM.org forums.
There is urgency about this problem (why, of course there is!). We can't/won't attempt the update on the LIVE site until we have confidence—unless someone can authoritatively link this problem to a migrated install, etc.
Thanks in advance for help and advice!