About Security Update 2010-001 Server (Leopard)
Security Update 2010-001 is recommended for all users and improves the security of Mac OS X.

SHA 1 digest = 32c5ecdb0aeabe0f4eaa
061a271242b6d96d8ba1

For explanation of what a SHA1 digest is, please visit this website: About SHA1 digest

For information on the security content of this update, please visit this website:Apple Security Updates.

Read more: http://www.apple.com/downloads/macosx/apple/security_updates/securityupdate2010001serverleopard.html