Blackberry KB15941 exlains that starting with BES 4.1, additional warnings are logged to the Blackberry Messaging and Windows Application log. These warnings are informational in nature, and do not indicate a problem.
If you’d like to reduce or eliminate these messages, KB04342 says to edit the EventLogLevel DWORD value of the appropriate BES service located at :
HKEY_LOCAL_MACHINE\Software\Research In Motion\Blackberry Enterprise Server\Logging Info
DWORD values and Event Types correspond as follows:
0 = Disable all event logging
1 = Errors
2 = Warnings
3 = Information
4 = Debug
5 = Other
Unforturnately, I was unable to determine which service was generating these excessive GWXMLData warnings, so I had to contact RIM directly. Their response was that the Mailbox Agent service needs to have it’s EventLogLevel changed to 1, which would log errors only.
I made this change on my BES server, and the event logs are now much slimmer!