Same for me, minimal config here:

  set tabstop=4
  set expandtab
  set list
  set listchars=tab:>.
  hi Comment ctermfg=darkgray
  syntax enable

I have the tabs replaced to ">." since I moved from tabs to 4-spaces in all my code. That way I can do a :retab in those old files which still have tabs in them.

ps: Glad to see I'm not the only Vim geek around here! ;)