Excel 2003 issue

[OliverL]

Hello.

Here is the little problem I have with Excel.

I'm opening a template (it's a quote form - no cells locked or hidden). I go to click on a cell, which works, but then makes it as if I was holding down the mouse button.

If I move the mouse, it selects an area of the spreadsheet.

Once this happens, I cannot close off the spreadsheet using the mouse clicking either the "X" (close button) or File > Exit. I can however use ALT, then the arrow keys, but my mouse still is selecting the cells on the sheet.

I've looked at the disabled plugins, nothing.

I've looked for updates, I've got them all.

Looked at the settings, they all seem right.

Any advice?

OliverL