Recently, one of DigiCert's cross-signed intermediate certificates expired. The cert in question is :
DigiCert High Assurance EV Root CA
Issuer: Entrust.net Secure Server Certification Authority
Valid until: 26/Jul/2014
Serial #: 42:87:40:A5
DigiCert themselves are stating that this cert is obsolete and should be removed from cert stores everywhere :
Could Qualys consider removing this cert from their store? It's certainly causing some false positives when checking certain digicerts certificates.