Instruct: Classify a review as either positive or negative.
Query: a downgrade

Microsoft has really abused its monopoly in forcing this POS on us. Still really buggy. My computer turns off and on when I don't want it to. So many pop-up windows asking you if you really want to do this or that - very frustrating. Also extremely slow - don't try running it on a machine with less than the 2GB RAM; even then it is not a high performance OS. I started with a 1GB system and it would freeze up and crash constantly and just take forever to open programs. Vista kind of reminds me of windows 98 - all the crashing and waiting for it to load.