Secure Your Mac from Certificate Flaws
A spate of problems has cropped up with rogue SSL/TLS certificates that have the potential to subvert the integrity of encrypted Internet communications. Over at Macworld, Glenn Fleishman explains the situation, and offers advice to Mac OS X users on how to put up their guard for the system and browsers.
Can't even get to the Tidbits article without accepting a certificate Safari cannot verify!
Fascinating. Sometimes there are transient verification errors.