[TYPO3-dev] processDatamap_afterDatabaseOperations called twice?

[Christian Tauscher]

Hi dear Developers!

In my EXT I user the processDatamap_afterDatabaseOperations hook to send 
an Mail with the entered data when save ist clicked in BE.

with status = NEW the mail is sent twice.
with status = UPDATE the mail ist sent one.

Sending Mails through TYPO3 forms or installtool works as expected, so 
the mail function seems to work correct.

For me it seems, the hook-function is called twice!?

Ist this true?
How can I handle this?

Thank you for your help,

Christian.