Totara 2.4.5 is a "security" release, because it includes important fixes for potential security vulnerabilities. We recommend upgrading your site to this release.

Here's the 2.4.5 changelog:

Release 2.4.5 (10th July 2013):
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Security fixes:
    Fixes from MoodleHQ http://docs.moodle.org/dev/Moodle_2.4.5_release_notes

New features:
    T-10392    Allow user to choose Totara Sync delimiter

Improvements:
    T-10724    Added backup and restore for course badges
    T-10854    Added extra checks for when user position is not set
    T-10816    Improved error reporting in Totara Sync
    T-10862    Display more information on Facetoface session timezone on course page

Database Upgrades:
    T-10784    Changed session cost fields to free text in Facetoface

Bug Fixes:
    T-10858    Display badge navigation to users with awardbadge capability
    T-10430    Make discount field optional in Facetoface signup
    T-10857    Fixed javascript error when editing course settings
    T-10615    Fixed error when selecting template 'not required' in new notification form in Facetoface
    T-10518    Fixed misc Learning Plans styles
    T-10853    Fixed MSSQL custom fields rules issues in Dynamic Audiences
    T-10860    Re-add Program links in alert blocks for learners
    T-10735    Display activity name if session display is set to zero in Facetoface
    T-10866    Fixed action selector in Facetoface sessions
    T-10553    Fixed course reminders
    T-10861    Fixed error with 'is enrolled' filter in cached course completion reports
    T-10849    Show courses in alphabetical order in course selector in badges
    T-10855    Show activities full names in exports of activity completion reports
    T-10852    Fixed validation of required custom fields in Facetoface
    T-10842    Fixed completion date for activities still in progress in activity completion report
    T-10843    Fixed error when editing SCORM with activity completion locked
    T-6710     Fixed language strings in Hierarchies custom fields