There are several reasons why the system might hang at the logon. Windows NT/2k/XP uses several unique ID's that are created during installiation like the Security Identifier or SID. 2 systems cannot use the same SID. Personally, I use PowerQuest's DriveImage PRO which has a tool called PQPrep that you can use to remove any confilcts with these unique identifiers when cloning and deploying to multiple systems. You might want to check Symantec's site and see if they have anything similar for Ghost.