For many years, Sync Services has provided the backbone for synchronization of other devices to Macs running OS X. A change that was part of OS X 10.7.4 has apparently stopped iCal from pushing changes to Sync Services, breaking some very popular synchronization applications -- BusySync and Spanning Sync.
The Spanning Sync official blog notes that:
This bug also affects other sync apps including BusySync and Blackberry Sync. It's unclear whether Apple intends to fix this bug.
Larry, Byron, and I
