Hi Pierre,
fortunately I found an article at the microsoft knowledgebase.
The best thing is: I found one in french

Allow me a final joke:
Your WAN-connection would have been disconnected after 8171 years, but
that wasn't tested by microsoft :-p
Just look here:
http://support.microsoft.com/default.aspx?scid=kb;FR;138365
I hope that helps and if so I'm glad I could be of help.
regards
André