@scrutinizer.....ah!, yes, that would explain it. Why didn't I figure that out? Thank you for that. I was wondering if it was just me doing something stupid.
As I'm recently redundant (and therefore looking for work) I've just joined LinkedIn. I have one connection through this board, but it would be good to make a few more.
I have disabled "LinkedIn" since the the original method of using a numeric profile key is no longer working.
It might be possible to flush the system (clear our database) of the numeric profile keys and convert to the "user specified" part of the LinkedIn URL.