Inaccurate Mouse positioning on sheets

On using Excel 2007 the mouse icon sometimes is approximately one cell height
above the actual operation position. In other words to select cell A2 I would
have to place the visible mouse on screen on cell A1. All other mice icons
are out by that degree. To clear I have to click on title bar/right click and
escape/click out of window and other alternative mouse operations.

I have checked different mice, checked drivers and other programs and it is
only in Excel 2007 that it occurs.

Has anyone had thsi happen to them?


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Many thanks
Guy