I haven't had any of the problems you mentioned, but I did recently upload a video, then go to the videos page to find that YouTube was trying to upload around 10 copies of it. That really confused me, but it seemed to be okay the next time I uploaded without me having to do anything. I hope you manage to sort your problems out too!
Sometimes it occurs network problem or browser crush.I face the same problem....keep it work easily and be patient.