> The 2006-expiring sigs were made between 2004-05-31 and 2005-08-13. The > 2007-expiring sigs were made between 2005-07-30 and 2006-04-19. > > Maybe there was a change in tools since then? > > --dkg Earlier gpg with defaultsettings asked people when signing keys, if they want to let their signature expire on the same date as the key.