Hi, I noticed when dismissing any and all calendar event with Thunderbird I'm always presented with a "Item Changed on Server" dialog. It asks me to "Submit my changes anyway" (even though I've made no changes) or to "Discard my changes and reload" It doesn't occur on any other app that I use to receive calendar notifications, it should just dismiss when I click dismiss from the initial alert. Is there something I've missed in the set up or a work around to prevent this dialogue to pop up when I "dismiss" a calendar notification? Any help would be greatly appreciated. Dave