SharePoint 2010 + December 2011 CU.
Got User Profiles syncing with Active Directory and configured to pull in picture from AD.
I've got a single Site Collection at the moment, and adding users to a "Person" field in a list. Most of these users have not visited the site collection yet. Some users are getting profile pictures to display, some are not.
I've re-run a Full user profile sync and also re-run the "User Profile Service Application - User Profile to SharePoint Full Synchronization" timer job.
UPDATE: Found a few references that indicate a need to run "Update-SPProfilePhotoStore" cmdlet after you import new pictures/profiles:
In the documentation for the Update-SPProfilePhotoStore cmdlet, it indicates:
After upgrading from Microsoft Office SharePoint Server 2007 to Microsoft SharePoint Server 2010, run the Update-SPProfilePhotoStore cmdlet to ensure that the SharePoint profile photo store is compatible with SharePoint Server 2010. The Update-SPProfilePhotoStore cmdlet should be used only after an upgrade from Office SharePoint Server 2007 has completed.
So the question now becomes, is this truly necessary for Profile Photo sync from AD to work correctly in SharePoint 2010 in a fresh SP2010 environment (i.e. no upgrade)? And is it necessary to run periodically as people's photos change or new users are added?