I am a long-time user of DropBox, having been a very early adopter. I have used the program successfully across several computers, phones and tablets, pretty much without issues. However, I recently moved to a new laptop, Lenovo ThinkPad, and now something is different. Files added to DropBox on another computer, don't synch to the new laptop until I open them on the new laptop. Any thoughts on why this may be happening would be very much appreciated.