Thanks Meter 5
Join Date: May 2009
Location: Upper Muddy Mississippi
Both my son and I had the same problem. We ended up doing a data wipe/reset and loading PnP with samsung TWiz zip. I don't think it has anything to with the latter but more to with setting up the gmail account fresh. I even did a cwm restore, taken from just before the wipe/reset and the calender kept syncing.
Loving my USC GS2 R760!
Only got root tho.