Hi Jerry - I'm just e-mailing you regarding the Exchange SP4 upgrade error when using a Samba 3.0 PDC. We presently have a Samba 3.0 PDC and using Exchange 5.5 SP4 without a problem, however we are in the process of migrating to Win2K3 and Exchange 2K3 and are setting up a test network to simulate the migration. While installing SP4 on exchange I keep getting a Dr. Watson error exactly the same as the thread metioned in the subject. If you have a solution or could point in the direction I would appreciate it. Thanks Mario Fernandez Network Administrator DataSynapse Inc. tel 212-842-8849 [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> View the DataSynapse e-mail disclaimer here: http://www.datasynapse.com/legal/emailprivacy.jsp <http://www.datasynapse.com/legal/emailprivacy.jsp> -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba