I'm not sure what to make of this.  I had a book on my shelf requested, I accepted the request, and said I'd mail later, and even clicked on "Print Label" to get the address (though all I do is write down the address and mail from the P.O.) 

Anyway, for no particular reason I was looking at my transaction archive, and it shows a request for that book from that member this morning that had been cancelled.  I am confused.  Is it still showing up because I already accepted the request, or did she cancel accidentally and then put the request in again?  I checked and can't see any way to see what time the current request was put in.

Should I just send a PM to mke sure the person really wants the book and this isn't some glitch?

I've had a few where the person seemed to not be sure they wanted it - ordered, cancelled, and then reordered. I bet if you look at the details, the cancelled transaction was before the one you have pending.