It was pure carelessness on my part, but it was an amazingly quick one....
I left my RS4 Strap on the steps where I sat to mount my gears during a recent YOG Asian Qulification meet. They do not allow any camera bags to be brought in so I was organizing my stuffs to be brought in....I was called for a briefing by the person ic, and stood up, with my back turned from where I was sat....and within minutes it was gone.
Good thing my batteries and CF cards were not in the pockets on the strap as I normally had them.
So if you are covering the events do be prepared and alert.