Here to add another voice. I'm very disappointed in google's handling of the situation, especially the fact that they include an option that is VERY misleading. The autocomplete option may disable the google engine's predictive search functionality, but DOES NOT remove autocompleting of bookmarks and search history as other users have pointed out. I DON'T want to have to clear my history every time I go into work.
For this reason, I can not use chrome at work and am forced to use firefox. It's completely unprofessional to have my personal sites showing up when I'm searching something for my boss.