Just moments ago, Apple released a new update for the Java framework for OS X 10.5 and 10.6. The updates are available now through Software Update, and are aimed providing enhancements in compatibility, reliability, and security.
The update weights in at about 76Mb. Below, please find the release notes:
Java for Mac OS X 10.6 Update 5
Java for Mac OS X 10.6 Update 5 delivers improved compatibility, security, and reliability by updating Java SE 6 to 1.6.0_26.
Please quit any web browsers and Java applications before installing this update.
Java for Mac OS X 10.5 Update 10
Java for Mac OS X 10.5 Update 10 delivers improved compatibility, security, and reliability by updating J2SE 5.0 to 1.5.0_30, and updating Java SE 6 to 1.6.0_26 for 64-bit capable Intel-based Macs.
J2SE 1.4.2 is no longer being updated to fix bugs or security issues and remains disabled by default in this update.
Please quit any web browsers and Java applications before installing this update.
Java updates tend to be pretty important for security reasons, and I haven’t heard of any instances of Java updates doing any damage, so you’d be best advised to download and apply the update at your earliest convenience.