This may not happen to you if you do not try to post other versions or uploads to replace a vid that died in the queue, and it is the first time it has happened to me thus:
Tried to post this
http://www.youtube.com/watch?v=_bOTYjuOiIk
and got the "duplicate url, try again screen...viewing the so-called duplicate, netted me a discarded viddy here-
http://www.videosift.com/video/nina-hagen-new-york-new-york

nina hagen, but an entirely different url....

Whassup?????