Thanks mccarn
Problem got a bit worse before it got better. The headless server, 350Km away, got to the point it wouldnt boot.
Got them to attach a monitor and keyboard and tell me what the screen was showing.
Found this post
http://forums.contribs.org/index.php?topic=34217.0 and followed the instructions near the end.
(yes, the bug Charlie indicated still exists !!!)
Did a post-upgrade, reboot and it seems my bacon has been saved !! Was looking like possibly a long drive and a long night.
P
PS: I should say that at the time I posted, I had not tried the post-upgrade / restore. When I did that remotely, it got me into the no boot situation !!! Bit ironic really. First time up, it got me deeper in the c***p, then second time, it got me out of it !