Hi Alan,
thanks for your rapid answer.
For sure, the certificates are still valid.
Not Before: Oct 1 07:43:57 2014 GMT
Not After : Sep 28 07:43:57 2024 GMT
Certificates worked until few days ago...
I signed web certificates with the same CA, too.
(i'll also take a look around about the fix for future client compatibility)
Thanks
Stefano