In addition to the boiler plate “improvements to stability, compatibility and security,” Safari 4.0.3 purports to address:
- Stability improvements for webpages that use the HTML 5 video tag
- Fixes an issue that prevented some users from logging into iWork.com
- Fixes an issue that could cause web content to be displayed in greyscale instead of color
Additionally, security content includes several fixes relating to visiting a “maliciously crafted website” where unexpected arbitrary code execution hijinks may ensue. For those like myself who use Top Sites, without this update it is possible for a “malicious website to promote arbitrary sites into the Top Sites view through automated actions.” This could be used to facilitate a phishing attack, or possibly get you in trouble with a spouse if porn thumbnails starts showing up in your Top Sites.