i noticed in the exchange CAS log.
Log Name: Application
Source: MSExchange ActiveSync
Date: 4/9/2013 3:57:46 AM
Event ID: 1007
Task Category: Requests
An error occurred while synchronizing a Skipped Item report. This is an uncommon error and is usually only logged when there are additional problems in an Exchange environment. Review the Application log for other events that provide information about the root cause of this problem. You may also consider disabling the feature that sends Skipped Item reports using the Set-MobileSyncVirtualDirectory cmdlt.
Synchronization with your BlackBerry failed for 29 items.