Contact sync seems corrupted. How to recover? iCloud, laptop, iphone work fine. iPad shows some entries in duplicate or near duplicate, and when you delete one, both get deleted. iMac no longer syncs at all though set to sync.
iPad seems buggy, iMac simply not connected to syncing contacts (and focusing on it, not on Safari bookmarks either)
iPad example:
Two entries exist for a contact on iPad, identical or differing slightly (e.g. a space being added before a word or identical in one but not the other). I delete one of the entries and both entries disappear from ipad, iphone, icloud. Entry persists on iMac.
iMac:
iCal syncs. Mail syncs. Calendar doesn't. Bookmarks aren't syncing either: A recent add to Safari bookmarks that has synced elsewhere has not synced on iMac.
On the iMac, when I go to iCloud in network settings all boxes are checked except Photo Stream, Back to My Mac, and Find My Mac. Account details show my email address, my name and Description "iCloud". The amount of GB available in iCloud storage, which matches what I see on my iPhone.
iMac: OSX 10.8.5, 2 GHz Intel Core 2 Duo
iPad, iOS 7.0.2, retina display, old larger USB port