On a variety of occasions while running VB code (different
code, different applications) the left side of the
worksheet area of the screen will become hidden by a gray
overlay of some kind.

The tool bar area and the status bar area are not
affected. The only way to clear up the problem is to close
excel and reopen it.

This occurs even if the code runs successfully.

Any suggestions are greatly appreciated.

Excel version = Excel 2002 with SP 2 installed.