On my Acquia Slate theme on http://www.homepcpatrol.com, I cannot seem to remove the author information (post date information is not present thankfully, for whatever reason) from my various content types I found the following answer in the issue queue:
"You can control the display of the post information for your theme by going to your theme's configuration page (/admin/build/themes/settings/acquia_slate). Then look under "Theme Specific Settings > Acquia Slate settings > Node settings > Author and date" and you will see the configuration settings for post information and the ability to control the output of it for each content type."
However, there are no Node Settings to be configured (as you can see from the attached screenshot.)
Please help!