Is it the same thing that happens when you select a range.

If yes, then check to see if you see EXT in excel's status bar. You could be in
EXTend mode. Hit the F8 key to toggle it off.

And sometimes mice have been known to stick. You may want to gently bang on the
buttons (including the wheel button) to see if that knocks something loose.



Lou wrote:

I am trying to start a new spreadsheet, however, when I click in a single
cell a range of cells turn blue. The number of cells that are selected is
never the same.

Lou

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Dave Peterson