"The certificate for omega.contacts.msn.com could not be validated. The certificate chain presented is invalid."
# cd .purple/certificates/x509/tls_peers/
# rm -f contacts.msn.com login.live.com loginnet.passport.com nexus.passport.com omega.contacts.msn.com ows.messenger.msn.com rsi.hotmail.com
E o problema fica resolvido.