Hmm, that code doesn’t break the theme, but just gets rid of the date/author altogether!
To clarify, I’m happy with the way the homepage of the site looks.
This is for single posts, where the following to appear beneath the title:
February 13, 2012 by tajasel
Currently, it prints:
February 13, 2012 by
By tajasel
(Where italics indicate a different text style.)