Janet Jackson fans, including this one, have been wondering why the the pop diva is missing so many of her concerts on her new “Rockwitchu” tour.

Jackson has postponed or rescheduled more shows than she has actually performed on the tour, which is scheduled for Oct. 24 at Kansas City’s Sprint Center.

The Sept. 27 show in Detroit was postponed to Oct. 28 because of production constraints. The word was her show and Celine Dion’s show at the same venue were scheduled too close together, not allowing time for proper set up and break down.

Since then, Jackson’s fans in Atlanta, Greensboro, Montreal, Boston, Philadelphia, and Ft. Lauderdale have been left holding onto their tickets after she has postponed shows in those cities, sometimes at the last minute.

Each of those postponements, most of which haven’t been rescheduled yet, involved Jackson taking sick days off for an unexplained illness that landed her a brief stay in the hospital.

Since no illness has been named, speculation is running rampant regarding what’s going on.

Guesses include everything from a pregnancy to her suffering from vertigo to poor ticket sales (Jackson, whose “Rhythm Nation” tour was the biggest debut tour ever, isn’t pulling the numbers she used to in concert arenas or with CD sales)

Hopefully Jackson will recover soon and get back out there to waiting fans.