Spontaneous photogallery slide-show

Having left my PC on Desktop for about 12 hours, I returned to find a slide-show of my Photogallery in progress in a format I didn't recognise - stippled white background, 2 or 3 photos fading in and out.  There was no toolbar and no way of exiting the display - Return, Esc, R & L clicks did nothing.  I used Ctrl Alt Del and that took me back to the Desktop.  Any thoughts/experiences?

Hi,geeeness. Have you run a Full Scan with Norton to see if anything is picked up ?

Hi Greeness

I've asked a moderator to move your message to the Tech Outpost forum here since that is for topics involving computing but not the Norton products. Clubhouse is for totally uncomputing stuff!

You should get a link here to the new location when it has been done.