Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Trendmicro's PC-cillin is a disaster and support is non-existent.

PC-cillin 2007 blocked access to my network scanner and destroyed my "palm pilot hotsync software installation". It deleted other important files without providing a means to get them back. Furthermore, there's no way to fix these problems with PC-cillin installed. I emailed "TrendMicro Support" for help and they did email back but only to advised me to search through their support pages (which were of no help in this case). After two weeks of frustration, I finally uninstalled PC-cillin 2007. I had to use XP's "System Restore" to get my system back to where is was previously. PC-cillin might be OK if you have a very simple computer setup. But for me, PC-cillin was worse than a virus. I will never buy from "TrendMicro" again.