I Know that .......Dynamic collection evaluation in Configuration Manager 2007 R3 periodically scans for new resources and updates a collections membership with only these new resources, independently of a full collection evaluation. But What type of resources are been discovered Resources that have been initially discovered=?Resources that have been provisioned with operating system deployment= ?Resources that have been scanned for initial hardware inventory= ?Resources that have been upgraded to a newer version of the Configuration Manager 2007 client= ? dipankar

Hi, New resources beeing discovered Computer objects where the USN has changed in the AD.(modifying properties, password e.t.c) the Computer USN is not changed when you add the computer to a group. Regards, Jrgen-- My System Center blog ccmexec.com -- Twitter @ccmexec