Site successfully migrated this afternoon - hopefully for the last time...
I had to prune the Private Messages a bit as there were 65,000 of them dating back to 2003 (37Mb of disc space). This made the database too big to easily move.
I deleted all but the last 12 month's worth so now only 16,000 PMs in the system at 12Mb.
Apologies to anyone who worries about things like this. I have the whole database backed-up on my PC so if anyone really REALLY wants an old message, I could probably restore it.
Steve