OK, I've no idea what caused it, but it's gone now. I cleared the cache and refreshed everything, and no more Tempus.
I don't think it was a virus, as this was the only site I had problems with, and you'd have to be a Folc to create a virus that specific, and how many Folcs are there that are that malicious?
I'm no longer plagued by Tempus and this little guy is rolling around merrily as before
Helga