#9 - April 17, 2010, 8:56 p.m.
The transaction will continue to be listed as in a processing state for up to 72 hours; however, this should not cause a delay in the mount being delivered. Did your friend completely exit the game so he was returned to his desktop, or did he simply log out to the initial World of Warcraft log in screen?
If he did indeed completely exit the game, but the mount is still not showing up, then would you please provide the name and realm for one of the characters that he is checking so that I may look into this matter further?