golfdud, "Under the Sarbanes-Oxley Act of 2002, companies are restricted from using their auditors for certain non-auditing work, so it is not unusual for companies to hire two auditing firms to meet many needs. Indeed, as companies gear up to comply with Section 404 of Sarbanes-Oxley, which guides how auditors report on companies' assessments of their internal controls, companies have been enlisting the services of accounting firms other than their auditors to help meet that requirement."