Microsoft Exchange administrators immediately noticed something different after the update, the fact the servers were being overwhelmed and even taken offline. The result, at least until a fix is issued, was to block all 6.1 devices at the exchange level. The announcement stated that the company has found the cause of the Sync issues with Exchange and the iOS 6.1 update.
And yes, yet again, it comes down to the infamous iOS calendar events syncing to a users Exchange mailbox that is causing the excessive logging. Below is an excerpt from the support page.
Apple has identified a fix and will make it available in an upcoming software update. In the meantime, you can avoid this bug by not responding to an exception to a recurring event on your iOS device. If you do experience the symptoms described above, disable then reenable the Exchange calendar on your iOS device.
The company also noted that in addition to the increased network activity users were also experiencing reduced battery life. The issue only affects Microsoft Exchange 2010 SP1 or later.
Are you or your organization experiencing these issues? Please share your feedback and comments below.