We have been trying to defrag our system and it gets about half ways and freezes up? What is the solution for this? Also, how do oyu know if the modem is going bad? We sometimes get a message" modem is missing" or "modem is in use", which is not the case either time. We use Netscape and IE for our browsers. Did the housecall things and got rid of a trojan, cleared the temp files and history on IE, also cleared the cache on NS. How can we defrag and keep it from freezing and why do we get the modem messages? Please help if anyone knows. Thanks.