Why does Pandora keep playing Incubus when it should know I hate it?

I've downvoted every Incubus song that has ever come on my Pandora radio and it insists on trying to keep playing more Incubus. It seems the more I downvote one song, it tries to play different Incubus songs. What is going on here and how can I train it to understand my hate for Incubus better?

From web app Joe Philllips

• Look at what station you are listening to. If it is a band or song really similar to Incubus, delete it and replace it with something else.

  Also, you can look at your whole thumbs-up/thumbs-down history if you go to the station menu and click "Edit Station Details." That might give you an idea of why Pandora thinks you like Incubus.

  Amendment: If you REALLY don't like them, get rid of any and all thumbs-up you may have done in the past for their songs.

  Joe Philllips : Is there a way to tell why it decided to play incubus? I've had this station for a few years and I've upvoted and downvoted a few thousand songs probably.

  Emory Bell : @sirconnorstack Sorry for the downvote, think I just ran into a bug. Had upvoted it, accidentally clicked the down button, changing it to -1, and when I tried to set it back, I was told that I had voted at least two days ago so it was locked :/

  Jarrod Dixon : @Emory I'm looking into this - in the meantime, I've changed your downvote back to an upvote.
  From sirconnorstack

• Pandora will "ban" an artist from a station if you give thumbs down to two of that artists songs. The only exceptions are if that artist is part of the definition of the station, or if you have ever given thumbs up to a song from that artist.

  Joe Philllips : Hmm. That may be the case but I do not ever recall giving thumbs up to an Incubus song. Strange!
  From Prestaul

• When it plays an Incubus song, click on the "Menu" button and select "Why was this song selected." That's probably as good as you are going to get. The songs by Incubus probably have qualities which are similar enough to the songs that you have Thumbed up.

  I've noticed that Pandora sometimes takes the wrong path.

  I've voted on well over 300 songs for one of my stations (No, really! See here), and I still find that Pandora plays the wrong kids of music. When this happens, I simply Refresh my browser and start over.

  For some of my smaller stations, I will start over. Clear all songs which have been thumbed up or down, and try again. I usually have better luck the second time through because I'm more careful with which songs I select.

  From Stefan Lasiewski