Permissions Errors. SUID

Repairing permissions for “Macbook HD”
Warning: SUID file "Applications/Utilities/Keychain Access.app/Contents/Resources/kcproxy" has been modified and will not be repaired.
Warning: SUID file "System/Library/Printers/IOMs/LPRIOM.plugin/Contents/MacOS/LPRIOMHelper" has been modified and will not be repaired.
Warning: SUID file "System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/Reso urces/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 "usr/bin/login" has been modified and will not be repaired.
Warning: SUID file "usr/bin/newgrp" has been modified and will not be repaired.
Warning: SUID file "usr/bin/passwd" has been modified and will not be repaired.
Warning: SUID file "usr/lib/sa/sadc" has been modified and will not be repaired.
Warning: SUID file "usr/libexec/chkpasswd" has been modified and will not be repaired.
Warning: SUID file "usr/sbin/scselect" has been modified and will not be repaired.
Warning: SUID file "usr/sbin/traceroute" has been modified and will not be repaired.
Warning: SUID file "usr/sbin/traceroute6" has been modified and will not be repaired.
Permissions differ on "usr/share/derby", should be drwxr-xr-x , they are lrwxr-xr-x .
Repaired "usr/share/derby".
Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired.
Permissions repair complete


I've been told to ignore these, is that true?

If so please tell me what they are and why I get them.

Thank you 🙂