Thanks for your response Moshu, truth is I’ve done what that post suggests and I turely cannot trace it anywhere.
I’ve looked to see if it’s a border, but there’s text over it so I don;t think it could be. i’ve looked to see if it’s a picture by downloading all of the wp-admin images and none of them would work. I’ve looked through about every class and <whatever the other one’s called> in the wp-admin.css file and none of them look responsible.
i can repeat my search later today, but at the moment I have to say that it appears none of the usual suspects are responsible for this light blue bar.