Receiving empty sms after registration

[Alexandre Girard]

Hi,

I receive an empty sms each time I register with my phone provider  
(Bouygues in France, Simio in Spain), with an origin address like "_@".

Has anybody got the same behavior?
Is it coming from the phone or from the provider?

Also, sms duplicate in the message box each time the phone switch on,  
I suppose it's a bug, but I'm not sure where to report it.

Have a nice day,

Alex