Active Directory Synchronization doesn't appear to be working 6.1

Problem/Symptoms
Computers that are deleted from Active Directory are not being deleting from the Notification Server database.
Cause
There can be several reasons that computers may not be deleted from the Notification Server database after being removed from Active Directory.
If the computer is set to a status other than Active, it will not be removed.
If the Import Rule that the computer was deleted with no longer exists, the computer will not be removed.
If the computer was never imported by the Microsoft Active Directory Component, it will not be removed.
If the computer shows that it has been deleted in the ItemResource table.
Directory Synchronization does not remove computers that are managed; it lets Purge Maintenance take care of those computers.
Resolution
Run the following SQL to determine the reason that the computers are not being deleted then do the appropriate action to correct it.

Select i.guid, i.name as 'Computer Name', 'Reason' = Case When ra.ResourceAssociationTypeGuid = '3028166F-C0D6-41D8-9CB7-F64852E0FD01'and childresourceguid not like '0A0203A5-D2B6-49F1-A53B-5EC31A89437C'Then 'Computer is not active'When i.guid in(select ii._resourceguidfrom inv_import_rule_imported_items iijoin item i on i.guid = ii._resourceguidwhere _resourceguid not in(select _resourceguidfrom inv_import_rule_imported_itemswhere importruleguid in(select guidfrom itemwhere classguid = 'B2378265-2779-49E6-998D-8BE620B3D9D9'))and i.classguid = '539626D8-A35A-47EB-8B4A-64D3DA110D01') Then 'Import Rule no longer exists' When i.guid not in (select i.guid from item i join inv_import_rule_imported_items ii on ii._resourceguid = i.guid Where i.classguid = '539626D8-A35A-47EB-8B4A-64D3DA110D01') Then 'Computer does not have import information (Generaly means it was not imported)' When i.guid in (select guid from itemresource where deleted = 1) Then 'The resource shows that it has been deleted in the ItemResource table' When i.guid in (Select guid from vcomputer Where ismanaged = 1) Then 'Directory Synchronization does not remove machines that are managed it lets Purge Maintenance take care of those computers.' Else 'This computer WILL be deleted when removed from Active Directory' end from vitem i left join resourceassociation ra on ra.parentresourceguid = i.guid where i.classguid like '539626D8-A35A-47EB-8B4A-64D3DA110D01' order by 'reason'

The resolution will depend on the cause. A report (you can find ite here) can be imported to help simpify the process.
If the computer is set to a status other than Active, it will not be removed. Find the computer in a report or collection and change the status back to Active or Delete it.
If the Import Rule that the computer was deleted with no longer exists, the computer will not be removed. Run the resolution in article 1815 to associate the computer with a current rule or delete it from the report.
If the computer was never imported by the Microsoft Active Directory Component, it will not be removed. Wait for Purge Maintenance or manually delete the computer.
If the computer shows that it has been deleted in the ItemResource table. Manually delete the computer from a report or collection.
Directory Synchronization does not remove computerss that are managed; it lets Purge Maintenance take care of those computers. Wait for Purge Maintenance or manually delete the computers.
If there is a problem with the schedule it may also help to disable and renable the Directory Synchronization task through the Altiris console.
Upgrading to the Microsoft Active Directory Component 6.1.x Resolves this problem if a previous version is currently installed.

Thx Gert