Installed using software update, and all went smoothly. No problems so far. Specs below - 100% stock system.
QUOTE
Security Update 2009-001 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.
For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT1222.
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