Operating system is Windows Vista. (I know, poor me!)
Yesterday I started getting a popup message that states: "Changes in the latest version of Googl Chrome require re-installing the Norton Toolbar from the Chrome Web Store. Click "Install Now" ...
I switched to Chrome about a year ago and have not intentionally upgraded it.
I do have Norton installed on my pc, however I do not recall ever receiving any popups from Norton, so I checked Norton and the internet to see if I could find anything ...