Are these root certificates suspicious? On a fresh install of Leopard when I look at the root certificates this is what I see when I order them by expiration date.



I find the names, dates, and number of certificates suspicious. Is this all normal?
Yes the installed certificates are valid, however I would advise updating to the latest version of Leopard and make sure that the compromised Diginotar certificates are uninstalled:  This link at ps Enable provides an easy method for this.

On Root Certificates, they are by their nature long lived since they are the "Master" certificates and having them expire too often would cause issues with SSL certificate chain's world-wide.