Autonomy IDOL enables you to scheduled a backup of its index to local disk.  I wanted to use Backup Exec to backup the Autonomy backup.  The Backup Exec agent was installed, but the service was refusing to start.  By default the Backup Exec agent service communicates on port 10,000, which was being used by IDOL.  Changing the Backup Exec agent port enabled the service to start.  See here for details: http://www.symantec.com/business/support/index?page=content&id=TECH24256