Our office have the following Autodesk Products, AutoCADD2002 (7 lic), LT2002 (5 lic), LT2004 (2 lic), ADT2004 (5 lic)... And of these software, 1, an ADT2004 is constantly having a problem with loosing it's Authorization Code. This particular PC already has 5 Authorization Codes entered. And this one PC that has AutoCADD 2002 also had it's Authorization Code requested a 2nd time. My question is, can you suggest any steps we can do on our side to orevent this or maybe if you know the cause of this problem. For the record, these 2 PC's that have these Authorization code problems are using a Matrox Parhelia 128MB Graphics card. Do you think hardware configurations can cause this problem? tnx.