When new computers are placed into Altiris it may take up to 24 hours for the system to get all of its patches and inventories completed. This is usally due to collection update times and long configuration update times (6+ hours).
There is an easy way to speed this whole process up and not effect the overall performance of your NS.
SELECT vr.guid FROM vresource vr join vComputer vc on vr.guid=vc.guid join item i on vr.guid=i.guid WHERE DATEDIFF(day, i.CreatedDate, getdate()) <= 2
Now your new agents will update config settings every hour so they can get all of their updates much faster. They will automatically switch over to the normal agent settings after 48 hours.
SELECT vc.guid FROM vComputer vc WHERE DATEDIFF(day, vc.CreatedDate, getdate()) <= 2