Are you using Outlook 2003 to test? That’s the only place I get the problem. I also get the same thing on my laptop - again, in Outlook 2003 only, but it’s a different graphics adaptor and resolution.

Apologies - correction, this does NOT happen on my laptop! Settings are the same re Cleartype etc, just a different graphics adaptor. The only difference between the two is that I had the Avast Pro trial installed on the desktop prior to ‘dropping back’ to Home, but I can´t imagine that anything left over from Pro in the registry would affect anything - clutching at straws here! I’ve installed the latest Nvidia drivers on my desktop this evening but that´s had no affect at all. Scratching my head thinking about anything else I might have ‘tweaked’ but can’t think of anything - it was just the Menu speed in TweakUI that had upset the menu issue I had before - solved by ‘Tech’. So, hmmm any other ideas? Why just Outlook…??