Hyperlinks in index point to wrong page

Hyperlinks in index point to wrong page

The hyperlinks in my index don't point to the right page. In fact they
point to a page exactly three pages before the indexed word. I'm using
texlipse, and have included the preamble below in case this is to do with
the ordering of packages. Any pointers greatly appreciated
\documentclass[openany]{memoir}
\usepackage{tipa}
\usepackage[misc]{ifsym}
\usepackage{ulem}
\usepackage{dashrule}
\usepackage{xtab}
\usepackage{adjustbox}
\usepackage{subfiles}
\usepackage{syntonly}
\usepackage{comment}
\usepackage{xspace}
%\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{kpfonts}
\usepackage{comment}
\usepackage{array}
\usepackage{ragged2e}
\usepackage{amssymb,amsmath}
\usepackage{graphicx}
\usepackage{a4wide}
\usepackage{float}
\usepackage{makeidx}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{wrapfig}
\usepackage{rotating}
\usepackage{relsize}
\usepackage{fullpage}
\usepackage{tikz}
\usetikzlibrary{shapes, positioning, shadows, trees}
\usepackage{calc}
\usepackage[latin1]{inputenc}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{tikz-dependency}
\usepackage{tikz-qtree}
\usepackage{titlesec}
\usepackage{fixltx2e}
\titleformat{\chapter}[display]
{\normalfont\bfseries\filcenter}
{\LARGE\thechapter}
{1ex}
{\titlerule[2pt]
\vspace{0.5ex}%
\LARGE}
[\vspace{0.5ex}%
{\titlerule[2pt]}]
\titlespacing*{\chapter}{0pt}{0pt}{40pt}
\raggedbottom
\input{mymacros}
\setlength{\Exindent}{10pt}
%\syntaxonly
%\excludecomment{answer}
%\excludecomment{answerNB}
%\excludecomment{wanswer}
\usepackage{hyperref}
\usepackage{linguex}
\makeindex
\begin{document}