Rid of bolded text

[rjd]

Sometimes I do not like the bolded weight text. For example, source code
comments are italic. This can be corrected by setting this in your theme.el :
 
 FROM
  '(font-lock-comment-face ((t (:slant italic :foreground "#bc9458"))))
TO
 '(font-lock-comment-face ((t (:slant normal :foreground "#bc9458"))))
 
 But, in shell-mode
  
when I issue an ls -l I get directories in bold. Also, in my
mode-line-format I have bold for mode-line-buffer-identification.

 I do not know where to override the font settings for these. Ideally I would
 like to disable bold and italic all together.
 
 What is the easiest way to do this?
 
 http://www.fontsquirrel.com/fonts/ubuntu-mono
 
 The font is ttf Ubuntu-Mono; in Windows/Fonts I see in the font family the
 regular, italic, bold and italic-bold.
 
 This does not work:
 

http://stackoverflow.com/questions/2064904/how-to-disable-bold-font-weight-globally-in-emacs