I finally figured this out! I have been beside myself trying to get the facebook birthdays off my calendars after I did a sync. I even following someone's advice to deactivate my facebook account and resync but that will not work. I uninstalled the app while I was deactivated and the fb birthdays went away but as soon as I reinstalled the app again, they all came back, even while I was still deactivated! But then I found it. The answer isn't with facebook at all, but with the calendar app itself. This is what you need to do exactly: 1. Click on your calendar app from your phone's home page, NOT the manage applications area. 2. Hit the menu key on your phone while you are in your calendar app so the pop up comes up. (On my phone I see Go to, Delete, Search, Sync, Calendars, and Settings.) Click on "Calendars." 3. At the bottom of the phone you will have two choices, Display or Edit - hit the "Display" button. Only then will you see all these choices with boxes and check marks. 4. Uncheck the box next to the Facebook section. And that is it! Watch all those awful blue boxes of birthdays you could care less about disappear before your very eyes and NOT come back! Wheeeeew. I was beginning to lose hope. I hope that helps everyone!