Hi, we use here 4 installations of the Business-Edition of ESET Smart Security 3.0.669 on Lenovo T61 Laptops. 2 of them with XP-Prof. SP2 and 2 of them with XP-Prof. SP3. We encounter major problems with the 2 installations running on SP2 (Blue-Screen as shown in div. other threads). Does anyone know, if maybe an update of XP-SP2 => XP2-SP3 will fix this problem? Thx BR ~noFearOfFlying Black holes are, where God is dividing by Zero.