Several times in testing imports over the last few months, some imports have never gotten out of the "Submitted" stage.
This thread is not really about troubleshooting that. I still don't know how by the way.
I have noticed though that if you start an import through the Import "wizard" once you get to a certain step, even if you hit Cancel it still for some reason adds some import steps with a status of Submitted and they never get run.
Being a little OCD maybe, I'd like to delete those jobs but don't know if there is a way.