[hilbert42]

I wish I'd known that years ago. I always use solid colors for background as it's less of a distraction (I suppose if I'd alternated between an image and solid color I'd have noticed it but I didn't).

The question remains why didn't Microsoft notice the problem at the time as to the programmer it should have been obvious. But then from experience I think I've answered that already.

BTW, I've still some old machines with Win 7 so I might experiment with it.

[zamadatix]

N.b. this bug was patched in early November 2009, within the first month of Windows 7's general availability.

[hilbert42]

OK, thanks. So it looks like I'd be wasting my time testing my old Win-7 machines as they'd be patched I'd reckon.

Somewhere in my archive I've still a pre-release beta which from your comment wouldn't be patched but I don't think I've sufficient enthusiasm or curiosity to install it from scratch. :-)