This optional viewer update, 1.12.3(6), contains a number of significant bug fixes related to Mac OS crashes, persistent problems with clothing appearing white on avatars, and updates to Mozilla libraries that affect login and F1 Help.
The update will be available by 4pm PST here: http://secondlife.com/community/downloads.php
The full release notes are as follows:
Release Notes for Second Life 1.12.3(6) November 1, 2006
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Other changes:
* Updated Mozilla libraries
* Clear Cache button also clears Mozilla cache
* Mac Mozilla browser profile no longer saved inside application bundle
* Browser agent string now identifies Second Life and SL Client version
* Mozilla lib version added to Help->About Second Life
* Added new user clothing to local files (speeds up appearance for new avatars)
* Terms of Service cannot be agreed to until the page has fully loaded
Bug fixes:
* Fixed crash when showing Profile
* Fixed various crashes on startup in MacOS
* Fixed changes not saved on gestures when edited within a prim
* Fixed new clothing appearing white on other avatars
* Disabled auto-detect hardware option on Mac - it's Windows-only
* Fixed login screen not launching links in new window on PPC Mac
* Fixed resolution box remaining grey after switching from windowed to fullscreen
* Fixed 'Auto-detect' not unchecking when user changes aspect ratio
* Fixed script command window not dismissing once it has been scrolled
* Fixed colored noise on Quicktime when first playing back a movie
* Fixed clickable area for objects in notecards
* Fixed Debug Settings to not save all changes as 'true'