Digital certificates are one way we know to trust someone online. Most of us use them without even realizing it; every time we visit a secure web site, our browser checks a certificate thats been signed and dated by a trusted third party. Other servers, such as those used to send email, rely on certificates, too.
But certificates, as they did for Google today, sometimes go stale. Given the number of people who use Gmail with their desktop mail application, this means desktop users were faced w....
GigaOM
