Instruct: Classify Amazon reviews into positive or negative sentiment
Query: STAY AWAY AT ALL COSTS!!!!

I'm always cautious about believing reviews here that are negative - especially about software. A lot of the experiences are based on the sophistication of the user, and it's typically those who can't solve common PC scenarios who complain the loudest. I'm no expert, but I'm far from a novice in this area. With that, I have to say this is some of the worst software I have ever used.It's turned my brand new, very fast and snappy Vista PC into a mess. Boot up's went from a minute or two to 8 to 10 minutes. Existing windows settings were ignored and access to simple things like printers on my network were blocked. Program access was slowed to a crawl. And oh boy does this thing hate iTunes. Just loading the program took 6 to 8 minutes following installation of 360. And even after removal from my system, it still has not returned to it's original snappy performance.This is awful software - beware - do not buy and install!!!