In your Software Update... Apple released Safari 1.2 today:
Safari 1.2 improves compatibility with websites and web applications by providing increased support for standards, adds support for personal certificate authentication, and works with Java 1.4.2 to enable websites that rely on LiveConnect for communication between JavaScript and Java applets.
This update also provides improved application stability, full keyboard access for navigating web pages, and the ability to resume interrupted downloads.
Safari 1.2 was recently seeded on Thursday and provides many requested new features.