Functions of PDC Emulater in Windows 2003/2000 domain

What are the functions of Functions of PDC Emulater in Windows 2003/2000 domain:

• Password changes performed by other DCs in the domain are replicated preferentially to the PDC emulator.
• Authentication failures that occur at a given DC in a domain because of an incorrect password are forwarded to the PDC emulator before a bad password failure message is reported to the user.
• Account lockout is processed on the PDC emulator.
• Editing or creation of Group Policy Objects (GPO) is always done from the GPO copy found in the PDC Emulator's SYSVOL share, unless configured not to do so by the administrator.
• The PDC emulator performs all of the functionality that a Microsoft Windows NT 4.0 Server-based PDC or earlier PDC performs for Windows NT 4.0-based or earlier clients.

Store user pictures in AD using thumbnailPhoto attribute

We can store user pictures in AD using thumbnailPhoto attribute of AD user object. That picture can will be showing in Outlook 2010 contacts and user profile page on SharePoint 2010. Here are some helpful links on understanding and implementing the concept:

1. Configuring thumbnailphoto attribute in AD : http://www.msexchange.org/articles_tutorials/exchange-server-2010/management-administration/configuring-using-display-picture-exchange-server-2010.html

2. Free tool to store pictures to AD: http://www.cjwdev.co.uk/Software/ADPhotoEdit/Info.html ( paid version is also available at  lower cost)

3. How SharePoint 2010 fetch the user picture from AD using thumbnailphoto attribute: http://blogs.msdn.com/b/russmax/archive/2010/02/27/sharepoint-2010-profile-picture-property-101.aspx

4. Few other resources to understand the concept:

- http://blogs.technet.com/b/ilvancri/archive/2009/11/17/upload-picture-in-outlook-2010-using-the-exchange-management-shell-exchange-2010.aspx

- http://msexchangeteam.com/archive/2010/03/10/454223.aspx

- http://social.technet.microsoft.com/Forums/en-US/ITCG/thread/403cda19-7a63-4d95-a273-8f7885e836cd

5. Another licensed tool for uploading pictures in AD: http://www.dovestones.com/products/Active_Directory_jpegPhoto.asp