Has anyone else gotten a request for a book that you no longer have listed. Twice now someone has ask for a book that I had already sent to another member months ago. I have no idea how they can request something that doesn't show up on my bookshelf but they have. Any ideas?

That doesn't seem possible, so if it's some weird glitch, you should use the 'contact us' link at the bottom of this page to report it to TPTB.

I'm guessing it was a glitch somehow.  Like sasssy mentioned, use the "contact us" link to report it.

This is from the help center:

I got two requests for the same book!

This happens for one of three reasons:

• You Posted the book twice

  • using different ISBNs
  • or posted one or both copies as a non-ISBN item
  • or posted the same ISBN again after accepting a request for the first one you posted.
  • If you used two different ISBNs (or one ISBN and one non-ISBN listing), you should accept the request for the correct listing. If you posted the same ISBN twice, you should complete the first request and decline/cancel the second if you do not have two copies of the book.

• Two copies of the book were posted simultaneously when you posted the book.

  • This can be caused by a server hiccup OR by your clicking "Post book" or "Refresh" while the book-posting was in process.

• The requestor submitted two simultaneous requests

  • This usually happens when the requestor clicks again to request the book when the Request button reads "processing..."

It does not matter if the requestor submitted the request twice, or the book was posted to your bookshelf twice; the next step is the same, to correct the duplicate requests in your account, as follows:

If this happens:

• You can simply accept one request, and decline the other by clicking
  • When you decline, the extra book will be removed from your bookshelf.
  • Be sure you accept the request for the book that was listed correctly, if you listed it twice.

If the book is on a WIsh List and involved in a pending offer:

• Wait for the book to be requested. 
• Accept the first request
• Decline any extra requests by clicking
• Doing this will remove the extra copies from your account. 
• You will have a chance to explain what happened to the requestor when you decline a request. 

Just some thoughts.  Does the first request that you sent out appear in your Transaction Archive?  Or could it have been part of a deal that you forgot to remove or could you have swapped it on another site.

I have had that glitch happen to me a few times in the 5 years I've been a member.  And the transaction showing that the book was sent out months previously is always on my transaction archive.

I've had that happen a few times too.  A couple of times, I got 2 requests, back to back for the same book.  I got the request, accepted it, then got another for the same book not long after.  Another time it was months later, but I checked and the book was in my transaction archive.  I think it was probably refresh glitch they mentioned.

I have had this same problem 2x now in the past month.  Once for the same book 2 times .  I went to posted list to ensure it was removed and couldn't find it there.  Yet it was requested again about 2 weeks later.  I'll try the contact us but wonder if it's some type of problem in the system?