Part of image remains when leaving a window ...

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For example, when I leave this NG, and "Catch-Up" the posts, a slight
portion of the post column in OE remains down at the bottom of the
window...close to the Folder column. I've notice this "graphic ghost" when
in Solitaire - the cards have appeared 'stacked, ' or fanned out slightly,
at times. I do not see well enough to know for sure, but had someone look at
my monitor for me. They agreed.

What is going on? I have screen shot of this.

Thank you.


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