After installing Leopard 10.5.3 earlier today, and now opening iCal for the first time a few hours later, I have come to notice that every single event on my Calendars has been duplicated. Sometimes twice, and occasionally 3 times. Most of the duplicates are events that I have upload to the Calendar through an .ics file. Since I have a lot of data, and rely heavily on my calendar (and having it sync to my iPod Touch) this is quite a problem. Any thoughts or suggestions? Thanks.