I'm new to Excel 2007... whilst I'm managing to find most things I'm used to using in 2003, I have an issue in one workbook that I can't figure out.

When I click in some single cells (not all), that cell and several below it automatically highlight as a range... left-clicking initially highlights the cell, but as you release the mouse button, the others below it also highlight.

I'm guessing this is a setting of some sort that I've unknowingly invoked, but I can't find any reference to it.

Some insight/assistance would be greatly appreciated.

Bryan