thanks for the prompt reply. As it happens, it wasn't anything to do with 'GZip compression' as this was already set to OFF. I think it's a Mozilla-related problem - sometimes the CACHE ca store all sorts of crap and mess with the layout of web pages without actually changing anything in the webpage code itself. Alas, I'm a Mozilla junkie due to it's speed, pop-blocking and tabbed browsing that I can't let it go...
I think I need to see a therapist... perhaps the MA (Mozilla Anonymous).
