Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good, Very configurable, but slows down the system...

I have been using it with XP for 6 months now. No major problems. It does tend to slow the loading of web pages and other network traffic (not as bad as web pages). You can end up spending a lot of time customizing it if you want high security. You can allow individual sites varying degrees of access to run scrips. It STOPS POP-UP WINDOWS cold! This is my favorite feature! If it did nothing but stop pop-ups it would still be worth the $$.