Instruct: Classify Amazon reviews into positive or negative sentiment
Query: watch out with xp !!

This antivirus does not work well with windows xp. After downloading windows service pack 1 scanning slowed to a crawl half way thru and caused a major power drain on my system. Also causes banging and clanging of hard drive on disc defragmenter and causes slowdown problems at shutdown. I removed it from my computer and switched to Safeworld anti-virus and have no problems at all..