Apple today released Security Update 2007-009 which is recommended for all users and improves the security of the following components:

- Core Foundation
- CUPS
- Flash Player Plug-in
- Launch Services
- perl
- python
- Quick Look
- ruby
- Safari
- Samba
- Shockwave Plug-in
- Spin Tracer

Security Update 2007-009 is available via Software Update and also as standalone installers.

More info and download links:
• Security Update 2007-009 (10.5.1) – 35.6MB
• Security Update 2007-009 (10.4.11 Universal) – 27.4MB
• Security Update 2007-009 (10.4.11 PPC) – 15.9MB