Do you trust the Comodo Group?

Catching up on my tech reading, I see that my web browser has been trusting Comodo as a certificate authority, but perhaps it should not:

The hacker, whose March 15 attack was traced to an IP address in Iran, compromised a partner account at the respected certificate authority Comodo Group, which he used to request eight SSL certificates for six domains: mail.google.com, www.google.com, login.yahoo.com, login.skype.com, addons.mozilla.org and login.live.com.

I have just taken appropriate action.