Janet Jackson canceled yet another concert at the last minute. She was supposed to resume her Rock Witchu Tour in Greensboro last Saturday night but it didn’t push through. Janet canceled the concert in Greensboro Coliseum but the concertgoer was alerted that the planned won’t push through just an hour and a half left before the show. At this point, Janet has not performed more concerts than she has on her problem-plagued tour! I wonder what is wrong with Janet?!?