Last night before my ride I picked up my bike to turn it around and the back tire came off! The weird thing was that the quick release was still engaged. Is it possible for that to happen or has someone been messing with my bike while it was on my rack? I know I should check that before every ride - but how many of us really do. I probably will from now on though.

I posted about a week ago that when I jumped the railroad track I heard this loud cracking sound - maybe it was the tire coming loose and then going back in place? It's kind of scary to think I may have ridden with the tire being like that for awhile.

Has this happend to anyone else?