I just upgraded to the 4.5 OS. Now I have 2 calendars?!? One as "default" and one as my "email address". I don't want two!! But I can't seem to get rid of the new one. It defaults to my email address calendar now and won't let me change it. Can anyone help?? Also, since I upgraded, all my calendar appointments older than 2 months were erased even though I still have it set to "forever". What's up with this upgrade??