Is Microsoft Security Essentials and Chrome really that good or do I actually have a bunch of viruses? I've been using OSX and ubuntu in the past and recently bought a netbook with windows 7 starter.  I'm a pretty heavy porn browser and go into all sorts of seedy parts of the internet.  I wouldn't put any important information on this computer and I mainly got it to play some old games on steam.  I've noticed it gets a little slow sometimes but I do a full scan every day so I don't know what the deal is.  It wasn't like this when I first got it.