selecting text I don't want

On an irregular basis, in both Internet Explorer and Google Chrome, text is suddenly selected that I don't want selected, sometimes covering the entire web page. I can close and reopen the browser and the behavior stops, sometimes for days, sometimes only for hours.

Any solutions out there are welcome. Thanks.

 

Are you on a laptop? Your palm might be touching the mousepad without you knowing. I know this used to happen to me when writing papers. I would select text accidentally and then write over it.

 

I am on a laptop, but the mouse pad is disabled.

 

Maybe its a ghost then

 

What's a ghost?