Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Norton Internet Security

This product seems to protect my system which is it's purpose, so I give it a 2 stars. However, it slows it down horribly. I can't believe how long it takes -- for example -- to simply load Microsoft Word or Excel.Also there is no free support.I had neither of these problems with McAfee, but I need to use NIS to see how it affects my website pages. When I turn on the optional ad blocking feature, it inserts code into them and crashes them.