Outlook 2007 recurring appointments cannot modify and send update; getting "The Attachment Size Exceeds the Allowable Limit" Error

Hi Expert

I am using Exchange 2007 SP3 with Rollup 11 and outlook 2007 SP3 with Windows 7

Our users is facing this error, i can see on the bottom of the appointment, it has attachment with the same appointment attached.

I googling some information, when a user modify an existing recurring appointment, it will auto attach the orginial appointment in the modified appointment, is it true?

http://social.technet.microsoft.com/Forums/office/en-US/2a5d2475-3c23-4326-a9cf-5f15a64147a8/when-one-occurrence-of-a-recurring-meeting-is-modified-the-update-wont-send-due-to-error-the?forum=outlook

i can use MFCMAIP to remove those attachment, but i cannot find any preventive solution for user daily operation for modifiy the recurring appointment

Could you guy help me on this and i would like to know, is it a behaviour of outlook 2007.

Thanks