Totara 2.2.11 is a "security" release, because it includes important fixes for potential security vulnerabilities. We recommend upgrading your site to this release.

Here's the 2.2.10 changelog:

Release 2.2.11 (6th December 2012):
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Security fixes:
    T-10161     Fix Learning Plan item view pages to ensure requested item is actually in plan

Database upgrades:
    T-9918      Add user undeletion functionality
    T-10144     Fix upgrade from 1.1 to skip dashboard conversion for deleted users
    T-9867      Add optional primary/secondary/aspirational user position visibility
    T-10185     Add manageanyplan capability and fix permissions in Learning Plans
    T-10068     Modify course completion status filter to support filtering against multiple statuses
    T-9984      Improve Face-to-face calendar settings
    T-9939      Add fine-grained totara_sync capabilities by element
    T-10038     Fix memory leak when upgrading from 1.1 on sites with many SCORM packages

API Changes:
    T-10126     Fix tag multicheck report builder filter                                           Added 'concat' option to 'multicheck' filters. This setting is off by default
                                                                                                   but must be set to true if the field being filtered consists of multiple,
                                                                                                   pipe-separated IDs. Code changes only required if you have added custom
                                                                                                   multicheck filters which use concatenation.

New features:
    T-10115     Add kiwifruit theme                                                                A new theme similar to the one used on the Totara demo site

Improvements:
    T-9816      Add parsing of date string formats to totara_sync                                  Users can now specify the format under Location Settings

Bug fixes:
    T-10012     Fix popup layouts for tablets in standardtotara Theme
    T-10083     Fix IE CSS issue when editing questions in mod/quiz
    T-10070     Fix Totara site registration
    T-10180     Move is_registered function into core renderer
    T-10184     Fix display of cron icon within registration message
    T-10154     Fix Learning Plans navigation so plans are shown under correct heading
    T-10167     Fix display of Program icons in Learning Plans
    T-10104     Fix "Add Evidence" button on the competency tab of a Learning Plan
    T-10179     Fix display of HTML descriptions when viewing competencies in a Learning Plan
    T-10166     Fix errors when approving Learning Plan items
    T-5734      Fix codings standards error in Learning Plans
    T-10163     Fix import of lowercase country codes in totara_sync
    T-10066     Fix dropping of clone temporary tables in totara_sync
    T-10164     Fix SQL parameters when using filters to search for users
    T-10134     Fix errors when trying to edit deleted users
    T-10052     Fix handling of user profile date custom fields in CSV bulk User Upload            Users can now specify the format under Location Settings
    T-10157     Fix backup of Course icons
    T-10177     Fix course icon when restoring a 1.1 course backup
    T-10156     Fix ability to remove Course prerequisites in Completion settings
    T-9804      Fix missing rb_source language files