While experimenting MSN gateway, I received roughly 160 messages for subscription requests.
This is too much!
By the way, when you send a subscription, the following window allowing to add the contact to your roster has to be resized.

Regards,

This should be handled automatically by the client normally.
We will check if something is broken on auto addition of gateway contacts.

Thank you,

I now noticed that connection to MSN gateway is automatically handled at startup.Would it be possible to unregister or desactivate the startup option?

For now there is not option to unregister, but this is a good idea. We will add this option. Thank you !