Repair Disk Permissions Help?

I ran verify disk permissions and got the following:

Verifying permissions for “Macintosh HD”

Group differs on “Library/Printers/InstalledPrinters.plist”; should be 80; group is 0.

Permissions differ on “Library/Printers/InstalledPrinters.plist”; should be -rw-rw-rw- ; they are -rw-r--r-- .

Warning: SUID file “System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent” has been modified and will not be repaired.

I tried to repair disk permissions and got the following:

Repairing permissions for “Macintosh HD”

Group differs on “Library/Printers/InstalledPrinters.plist”; should be 80; group is 0.

Permissions differ on “Library/Printers/InstalledPrinters.plist”; should be -rw-rw-rw- ; they are -rw-r--r-- .

Repaired “Library/Printers/InstalledPrinters.plist”

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 tried to repair disk permissions again and got the following:

Verifying permissions for “Macintosh HD”

Warning: SUID file “System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent” has been modified and will not be repaired.

Permissions verification complete

Does anyone know if this is something I should be concerned about? If so, what steps would I follow to repair it?

Thanks!