Hi Hazel, Welcome to the list. Could you tell us what anti virus software you are using?, roughly how old is your computer?, What kind of tasks have you been using your PC for and have you installed anything lately other than Kurzweil and your scanner?. What version of Kurzweil would be helpful and anything else you can think of. I wonder if you are using software such as Norton or Macaffee anti virus programs. Paul. ******************************************************************** NOTICE: The information contained in this email and any attachments is confidential and may be privileged. If you are not the intended recipient you should not use, disclose, distribute or copy any of the content of it or of any attachment; you are requested to notify the sender immediately of your receipt of the email and then to delete it and any attachments from your system. NCBI endeavours to ensure that emails and any attachments generated by its staff are free from viruses or other contaminants. However, it cannot accept any responsibility for any such which are transmitted. We therefore recommend you scan all attachments. Please note that the statements and views expressed in this email and any attachments are those of the author and do not necessarily represent the views of NCBI ********************************************************************