I pretty much use my yahoo account for everything including my calendar which is VERY important to me. Ever since I downloaded the newest version of Facebook, my calender won't syncronize. Any one else having that problem? And, yes, I traced it back to Facebook because when I delete Facebook, end of problems. I can reinstall Facebook and everything is ok for about 2 days and then the inability to sync comes back. I have even unclicked the options in the Facebook setup wizard for the calendar as well.
