iPhoto Flickr syncronisation

Hello to all,

I'm useing iPhoto 9.5.1 and I have connected iPhoto with my Flickr-Account.

I'm very pleased about this comfortable and easy way to upload Photos to my Flickr-Account.

Although I must see, that iPhoto is permanent synchronizing with Flickr.

That means, if I work with (change) a Photo in iPhoto in any way, my Flickr-Account will directly synchronized.

How can I stopp this Auto-synchronization?

For any kind of help, I would be very thankful.

Best Regards - Daniel