PFE Links

http://www.microsoft.com/downloads/details.aspx?FamilyID=412a9ef1-3358-4420-b820-0ca3f4641651&displaylang=en

http://blogs.msdn.com/debuggingtoolbox/archive/2008/07/03/tools-for-troubleshooting-sharepoint-applications.aspx

http://blog.krichie.com/

http://sharepoint.microsoft.com/blogs/fromthefield/default.aspx

AD useraccountcontrol property update.

ADuserAccountEntry.Properties[uac].Value = ""
ADuserAccountEntry.Properties[uac].CommitChanges()

ADuserAccountEntry.Properties[uac].Value = new value
ADuserAccountEntry.Properties[uac].CommitChanges


i.e. Delete the old value and then add the new value.. i.e. update. An overwrite is not allowed.