Apple has released Safari 5.1.5 with the following improvements:
Mac OS X Lion:
Safari 5.1.5 contains a fix for an issue that could affect website usability when running Safari in 32-bit mode.
For detailed information on this update, please visit: http://support.apple.com/kb/HT5142
Mac OS X Snow Leopard:
Safari 5.1.5 contains improvements to usability and stability, including changes that:
• Fix an issue that could affect website usability when running Safari in 32-bit mode
• Fix an issue that could affect the stability of Software Update on Mac OS X Server v10.6.8
Safari 5.1.5 contains stability improvements.
For detailed information on the security content of this update, visit this site: http://support.apple.com/kb/HT1222
Safari 5.1.5 is available via Software Update.