Apple has posted version 1.1 of the Security Update 2005-001 through the Software Update utility. The first version (1.0) which was released on Monday had broken 64 bit support, preventing some applications such as Wolfram Research's Mathematica from running.

Here is the description of the update, provided by Apple:

Security Update 2005-007 delivers a number of security enhancements and is recommended for all Macintosh users.

Security Update 2005-007 v1.1 replaces Security Update 2005-007 v1.0 for Tiger systems Mac OS X v10.4.2. Users who have already installed v1.0 on Tiger systems should install v1.1.

Security Update 2005-007 v1.1 provides a combined 32- and 64-bit version of LibSystem to replace the 32-bit version that was delivered in v1.0. No other changes have been made in version 1.1.

This update includes the following components:

AppKit
BlueTooth
CoreFoundation
cups
Directory Services
HIToolBox
Kerberos
loginwindow
Mail
OpenSSL
QuartzComposerScreenSaver
Security Interface
Safari
X11
zlib

For detailed information on this Update, please visit this website: http://www.info.apple.com/kbnum/n61798