I've had this for years, read many "answers" on many "forums". NO ONE has come up with a solution.
I'm a plumber and if one of my jobs leaks I go back and fix it! (MS pls note but you won't as you're far too arrogant).
It must be a bug, enabled by a certain conbination of keystrokes as I have it on one sheet of a multiple sheet workbook and not on the whole sheet, I get 7 cells highlighted in the column below the one I select. I'm on an IBM ThinkPad A30, XP Pro S3 with
Office 2007. Not the mouse as it's the same with the built in cursor control (even with the mouse unplugged).
It's a real pain to "work around" and it's in a template and that sheet took a lot of hours to build and all the sheets have linked cells to copy similar information forward. I'm also an electrician and use it to record all my circuit test results and print
reports.
There are many things that work temporarily to disable this bug but it invariably comes back at some point. I think I will have to bite that bullet and delete that sheet then rebuild it as that is the only way I've discovered to get rid of it. But if you
do bt chance hit that certain conbination of keystrokes it will be back!
Heartfelt thanks to anyone who can come up with a solution to this, we don't want workarounds though, need it SOLVED as those of us who experience it do get very frustrated as it is such a hindrance.