Bugs with mac/icloud and the "me" contact
I have a Macbook and my wife uses an iMac. We share an iCloud account for syncing contacts and photo stream, and I have my own iCloud account for my own calendar and reminders synced between my iPhone and Macbook.
Both macs have been upgraded to Mountain Lion.
In contacts on the iMac, my contact is marked as "me". What makes the mac decide that a particular contact is the current user's identity? If you go to System Preferences -> Users & Groups -> Contacts Card: Open, it opened my card, and I can't find any way to change it.
My wife went to icloud.com and changed her picture. After doing so, it changed my picture, not hers, in contacts. My contact has my own e-mail address, her contact lists her icloud e-mail address. So if anything, it should be able to associate her contact with her icloud account.
We wanted to share calendars with each other. I shared my icloud calendar with her, no problem. When she tried to share with me, there was an error message saying "you can't share your calendar with yourself". The icloud account she's trying to share is of course, a different e-mail address than the one she's trying to share with. She tried doing the same thing from icloud.com, and instead got an error. Even after making her card the "me" card, it didn't make a difference.
Oddly enough, she was able to share her calendar with a different e-mail address that I can access. When I clicked on the invitation, I was already logged into icloud.com using my other e-mail (the one that she wasn't able to share with), and I was thus able to accept her invitation in my icloud account. She got an email saying "You attempted to share your calendar with X, but it was accepted by Y".
As for contacts, I renamed my contact as her, and created a new one for me. (before I found the Card->"Make this my card" option) After I did that, her contact correctly said "Me". On my macbook, viewing her icloud contacts, both my contact and hers both say "me", but only on mine is "Card->Make this my card" correctly grayed out.
Another weird side effect of all this, I'm sending e-mail in the mail app, and messages I send (using my identity and my e-mail which is listed in my contact) shows her contact's photo.
MacBook Pro (15-inch Early 2011), OS X Mountain Lion