When syncing to a device,I look at my list of events for Photos in iTunes, the list includes at the bottom of my events that are dates such as June 13, 2012.These are not actual events which were on my iPhoto,.
I have tried to delete iPod cache and re sync with no success.
Rebuilding my iPhoto library helped me to find some events that I thought I had lost. I am still having an issue with iTunes. The events with dates still appear. My work around is to select events for the sync and not select any of the ones with dates.