Check the report
Reports > All Reports, then expand Reports > Discovery and Inventory > Inventory > Cross-platform > Software/Applications > Installed Software or Installed Software by Computer
##Edit##
https://www-secure.symantec.com/connect/forums/altiris-software-report
SELECT vc.Guid, vc.Name AS ComputerName, arp.DisplayName, arp.DisplayVersion, vu.Name AS UserName, vu.Department
FROM vComputer vc
RIGHT JOIN (SELECT DISTINCT Name FROM vComputer) AS vc1
ON vc1.Name = vc.Name
INNER JOIN Inv_AddRemoveProgram arp ON vc.Guid = arp._ResourceGuid
INNER JOIN vUser vu ON vc.[User] = vu.Name
WHERE arp.DisplayName LIKE 'Adobe Flash Player 10%' AND arp.InstallFlag=1