In this post you can find usefull information regarding iOS 6.0 and Exchange issues articles :


iOS6 devices erroneously take ownership of meetings - Exchange Team Blog - Site Home - TechNet Blogs


This one contains the most extense list of "issues" and how you will be able to address them :


Current issues with Microsoft Exchange ActiveSync and third-party devices


Here is one of the last we found :


Meeting in Attendee’s Calendar Loses Track of the Meeting Organizer

I hope this helps out :)


Kind regards,


João Ribeiro