[Ekiga-list] unable to register on ekiga.net

[yves <yvln free fr>]

Ubuntu 12.10

i tried to install ekiga 4.0 with deb packages
everything works but ekiga.net

i'm able to register on freephonie.net and on iptel.org
but even after changing password i cannot register on ekiga.net

back to ekiga 3 from ubuntu repository
no change

is there something i can check ??