The following are examples of messages that may appear in the Disk Utility log window when repairing disk permissions. Warning: SUID file "usr/libexec/load_hdi" has been modified and will not be repaired. Warning: SUID file "System/Library/PrivateFrameworks/DiskManagement.framework/Versions/A/Resources/DiskManagementTool" has been modified and will not be repaired. Warning: SUID file "System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/Resources/Locum" has been modified and will not be repaired. Warning: SUID file "System/Library/PrivateFrameworks/Install.framework/Versions/A/Resources/runner" has been modified and will not be repaired. Warning: SUID file "System/Library/PrivateFrameworks/Admin.framework/Versions/A/Resources/readconfig" has been modified and will not be repaired. Warning: SUID file "System/Library/PrivateFrameworks/Admin.framework/Versions/A/Resources/writeconfig" has been modified and will not be repaired. Warning: SUID file "usr/libexec/authopen" has been modified and will not be repaired. Warning: SUID file "System/Library/CoreServices/Finder.app/Contents/Resources/OwnerGroupTool" has been modified and will not be repaired. Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAgent" has been modified and will not be repaired. "Any message that starts with: 'ACL found but not expected on...'."
More from Apple OS X Support ...