Instruct: Classify Amazon reviews into positive or negative sentiment
Query: PC-Cillin 2000 Virus Protection

Here is a product that I listened to the ratings and have been very disappointed. It has caused my system to lock up on start up and shut down every day. So far, technical support has been most unhelpful. I think that these may be very nice people working there, but very untrained. The support did not go beyond what I had already tried from support online. I was told to uninstall my previous version and reinstall the 2002 version. Only problem was, the serial number that I was given did not work, and so far no one has been willing to supply me with a working number. It's been over a week now that I have been without virus protection and I have had this product for less than two months.I wanted to give this company a try, but so far I am not pleased.