For every secure google service (HTTPS : gmail / reader / wave / login on google account), I am getting a bad certificate warning from chrome.

http://memory.jeremilhau.fr/certif.png

Is this the real Google certificate ? I'm very surprised of the country of origin...

10 minutes later, back to another (trusted) certificate... I did not changed anything at all on my computer... What happened ?

http://memory.jeremilhau.fr/certif2.png