Security Update 2011-002 (Leopard - Client)
Security Update 2011-002 is recommended for all users and improves the security of Mac OS X. Previous security updates have been incorporated into this security update.
For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT1222.
SHA 1 digest = d9ff801e7d7dd5ed76bfdd3adf8d2bf9c7336c44
For explanation of what a SHA1 digest is, please visit this website: About SHA1 digest
Read more http://support.apple.com/kb/DL1374