Can you please tell me why for the last couple of days, most thouogh not all of the posts that I submit, appears 5 or 6 times, after the first time I ensured that I only clicked submit once, but lo and behold the post appeared 5 times. It doesn't happen on any other site on the internet.
Try plugging a mouse into a USB port. If the problem suddenly disappears it suggests a fault with the left-click function on your laptop. (Also, until you've solved the problem, be very cautious about ordering anything - or doing online banking transactions - with your laptop. You might end up doing the same transaction many times!)