Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lots of Problems

Having used multiple copies of Norton Anti-Virus and Internet Security for years, I finally got fed up. Endless problems and lots of time spent with Indian tech support personnel. Conflicts with other software (particularly Microsoft Outlook), and blocking various things that shouldn't be blocked. The capper was the impossibility of uninstalling the 2003 and 2004 NAV products without calling technical support!Norton looks good and consistently gets the best reviews. However, the reviewers are not having to live with the endless problems associated with owning and using these products.After enduring this travesty for years, I recently switched to PC-cillin. it's a huge improvement. As stated by other reviewers, it doesn't hog resources and runs quietly in the background, getting the job done. What a relief!