iCal appointments come back after del

My iCal seems to be doubling my appointments - if I start a new appointment it saves "New Event" then when I type something it saves another version. If I edit something it ads yet another appointment over the others. Then after I delete the older ones, in about 1 minute they just come right back.

Ideas?

I think iCal is well and trully messed up after the latest update. Mine won't allow me to specify a time for an event.

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