Chrome search bar automatically uses old search terms

From: https://www.google.com/support/chrome/bin/answer.py?hl=en&answer=95656

The prediction service is turned on by default. Follow these steps to turn it off:

1. Click the wrench icon tools menu on the browser toolbar.
2. Select Options (Preferences on Mac and Linux; Settings on Chrome OS).
3. Click the Under the Hood tab.
4. In the "Privacy" section, deselect the "Use a prediction service to help complete searches and URLs typed in the address bar" checkbox.

Keep in mind that the address bar shows matches from your browsing history, in addition to predictions. If you don't want to see matches from your browsing history, clear your browsing history.

Emphasis added to that last sentence, its important!!

I just use "foo", Delete, Enter.