Ah...the theme I'm using is a custom one I developed for Moodle 1.8.2.
My client uses SAP Portal and asked me to skin Moodle to look like it belonged to the Portal so that the look and feel woudl be more 'acceptable to management'.
The customised theme was based on the standard theme and worked perfectly on 1.8.2. However, I've just installed 1.8.3+ and I copied over the theme folder from the older installs thinking there wouldn't be too much difference. But obviously there IS something new that has been added to the Moodle mix between the two minor versions that is not covered by the previous theme CSS files.
I should be able to work it out by viewing the source HTML but does anyone know what got added in here and why? Is this some type of normally hidden debug code etc?
Rod