Since a good picture is better than a long text, here is the problem:
And here is most of my Latex file up to this point:
\documentclass[12pt,a4paper,oneside]{book}
\usepackage{setspace}
\usepackage[francais, english]{babel}
\usepackage[applemac]{inputenc}
\usepackage{textcomp}
\usepackage{graphicx}
\usepackage{enumerate}
\usepackage{array}
\usepackage[bf,figurewithin=none,tablewithin=none]{caption}
\usepackage{verbatim}
\usepackage{tocloft}
% Margins
\usepackage[left=4cm, right=2cm, top=3cm, bottom=2cm]{geometry}
% Nomenclature -> List of Abbreviations
\usepackage[intoc]{nomencl}
\renewcommand{\nomname}{List of Abbreviations}
\makenomenclature
% Make magic URL
\usepackage{hyperref}
\usepackage[all]{hypcap}
\hypersetup{
pdfborder = {0 0 0 0}
}
% APA style referencing
\usepackage{natbib}
% Hack for URL serif font formating
\let\oldUrl\url
\renewcommand{\url}[1] { \urlstyle{same}\oldUrl{#1} }
% ToC & Abbreviations in the ToC
\usepackage[chapter]{tocbibind}
% Widows & Orphans
\widowpenalty=10000
\clubpenalty=10000
\begin{document}
\selectlanguage{english}
\frontmatter
% --------------------------Table of Contents--------------
\renewcommand{\contentsname}{Table of Contents}
\setcounter{tocdepth}{1}
\tableofcontents
% --------------------------List of Abbreviations----------
\clearpage
\printnomenclature[3 cm]
% --------------------------List of Figures-------------------
\clearpage
\listoffigures
\listoftables
Do you have any idea what is going on with the line spacing?