When you regularly make use of Cucumber's "show me the page" step (or let pages pop up as errors occur), the capybara-20120326132013.html files will clutter up your Rails root directory.
To tell Capybara where it should save those files instead, put this into features/support/env.rb:
Capybara.save_and_open_page_path = 'tmp/capybara'
Posted by Dominik Schöler to makandra dev (2012-03-26 11:33)