Arno writes in to tell us that Thawte will be discontinuing their free E-mail Certificates and email cert "web of trust" service, as of Nov 16, 2009.  They are offering a free one-time migration to a  1 year Versign certificate services subscription (which is is a chargeable thing after your first year runs out).

Information on the discontinuation and the migration can be found here ==> https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=AD196&actp=LIST&viewlocale=en_US
and here ==> https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO12704