Thank you sooooooooooo much for your help Paul.
It was the above, and a few missing hash # marks in the main site css file
(which I edited in Dreamweaver the other night!). Created one mother of a
memory leak. (Completely off-topic: This is the sort of thing that makes
IE windows insecure, someone could send out a page with this error via
email and start executing commands, after the buffer overflows, got an
offlist reply on this one who said that memory usage went from 130 mb
(bloated) to 900 mb (ouch), scary stuff win users)
Thank you list too for not flaming me too bad on this one.