Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a word of caution

Insert those Encarta CDs into your PC and you will notice, that not one, but two installation processes start. Microsoft updates your system with Internet Explorer 6.0 and Oulook Express 6, deleting scores of registry entries and seriously "updating" your system settings.There is NO hint that this will happen, there is no way to stopp it and it's irremovable. The new explorer crashes frequently on my system, it's much slower and a million things go wrong that worked perfectly before.The content on the other hand is closely focused on use in schools and is so politically correct that it will hardly satisfy any critical mind.