Compilazione lenta

Salve a tutti,
sto avendo problemi con la compilazione di un documento, ma non riesco a capire
cosa la causa.
Il problema è che a volte la compilazione avviene velocemente, altre volte invece
si ferma per continuare solo dopo un minuto circa…

Vi scrivo qui di seguito il preambolo del mio documento:
`
\usepackage{authordate1-4}
\usepackage{layaureo}
\usepackage[latin1]{inputenc} %encoding della tastiera
\usepackage [english] {babel} %pacchetto per la sillabazione e definizione della lingua
%\usepackage[T1]{fontenc}
\usepackage{amsmath}%pacchetto per formule matematiche
\usepackage{amsfonts}%font aggiuntivi per formule matematiche
\usepackage{amssymb}%introduce nuovi simboli per gli ambienti matematici
\usepackage{verbatim}%permette di scrivere testo non formattato
\usepackage{xspace}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{enumitem}
\usepackage{latexsym}
\usepackage{makeidx}
\usepackage[pdftex]{color,graphicx}
\usepackage{bbding}
\usepackage{cases}
\usepackage{caption}
\usepackage{float}
\usepackage{array}
\usepackage{lscape}
\usepackage{booktabs}
\usepackage{multirow}
%\usepackage{chemarrow} %frecce chimica
%\usepackage[version=3]{mhchem}
\usepackage{pdflscape}
%% HYPERREF package custiomisation %%
\usepackage{hyperref}
\hypersetup{
unicode=false, % non-Latin characters in Acrobat’s bookmarks
pdftoolbar=true, % show Acrobat’s toolbar?
pdfmenubar=true, % show Acrobat’s menu?
pdffitwindow=false, % window fit to page when opened
pdfstartview={FitH}, % fits the width of the page to the window
colorlinks=true, % false: boxed links; true: colored links
linkcolor=blue, % color of internal links
citecolor=blue, % color of links to bibliography
filecolor=blue, % color of file links
urlcolor=blue, % color of external links
plainpages=false
}

\newcommand{\nfkb}{NF-$\kappa$B}
\newcommand{\ikb}{I$\kappa$B}
\newcommand{\hifa}[1]{HIF-$#1\alpha$}
\newcommand{\hifb}[1]{HIF-$#1\beta$}
\newcommand{\oo}{\ensuremath{\mathrm{O}_2}}
\newcommand {\qed}{ \mbox{\hspace*{11pt}$\square$}}
\newcommand {\punto}{\item [$\bullet$]}
\newcommand {\trian}{$\blacktriangleright \text{ }$}
\newcommand {\pdd}[2]{\frac{\partial #1}{\partial #2}}
\newcommand {\dd}[2]{\frac{d}{d #2}{#1}}
\newcommand {\alfa}{\alpha}
\newcommand{\test}[1]{\textit{Test~#1}}
\newcommand{\mynewline}{\text{ }\\}
\newcommand{\mydoublenewline}{\mynewline \mynewline}
\newcommand{\X}{$\times$}
\newcommand{\figref}[1]{\figurename~\ref{#1}}
\newcommand{\ikba}{\ikb $\alpha$}
\newcommand{\ikbb}{\ikb $\beta$}
\newcommand{\ikbe}{\ikb $\epsilon$}
\newcommand{\ikbz}{\ikb $\zeta$}

%
%
%% Command to easily add references to my documents
%% (usage: \makereferences{referencesfilename_NO_EXT}
%
\newcommand{\makereferences}[1]{
\clearpage
\nocite{*}
\bibliographystyle{authordate1}
\bibliography{#1}
\addcontentsline{toc}{section}{References}
}

\author{Luca Cerone}

\title{title}
\date{March, 2010}

\documentclass[12pt,a4paper,oneside,titlepage]{article}
\linespread{1.5}

\begin{document}
\maketitle

\section{section1}
some text
\section{section2}
some other text

% vi commento la prossima riga
%\makereferences{references}
`

Quando compilo il documento, a volte fila tutto liscio, ma in altri casi la compilazione è lenta e richiede più di un minuto…
Quello che leggo quando la compilazione (usando pdflatex transfer.tex) va lenta è questo:
`
C:\Users\Luca\Documents\>pdflatex transfer.tex
This is pdfTeX, Version 3.1415926-1.40.9 (MiKTeX 2.7)
entering extended mode
(transfer.tex
LaTeX2e <2009/09/24>
Babel and hyphenation patterns for english, loaded.
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\article.cls”
Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\size12.clo”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\mycustompackage\mycustompackage.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\authordate\authordate1-4.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\layaureo\layaureo.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\geometry\geometry.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\keyval.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\ifpdf.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\ifvtex.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\geometry\geometry.cfg”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\tools\calc.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\inputenc.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\latin1.def”))
(“C:\Program Files\MiKTeX 2.7\tex\generic\babel\babel.sty”
*************************************
* Local config file bblopts.cfg used
*
(“C:\Program Files\MiKTeX 2.7\tex\latex\00miktex\bblopts.cfg”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\babel\english.ldf”
(“C:\Program Files\MiKTeX 2.7\tex\generic\babel\babel.def”)))
(“C:\Program Files\MiKTeX 2.7\tex\latex\ams\math\amsmath.sty”
For additional information on amsmath, use the `?' option.
(“C:\Program Files\MiKTeX 2.7\tex\latex\ams\math\amstext.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\ams\math\amsgen.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\ams\math\amsbsy.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\ams\math\amsopn.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\amsfonts\amsfonts.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\amsfonts\amssymb.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\tools\verbatim.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\tools\xspace.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\booktabs\booktabs.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\multirow\multirow.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\enumitem\enumitem.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\latexsym.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\makeidx.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\color.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\00miktex\color.cfg”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\pdftex-def\pdftex.def”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\graphicx.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\graphics.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\trig.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\00miktex\graphics.cfg”)))
(“C:\Program Files\MiKTeX 2.7\tex\latex\bbding\bbding.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\ltxmisc\cases.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\caption\caption.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\caption\caption3.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\float\float.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\tools\array.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\graphics\lscape.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\pdflscape.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\ifxetex\ifxetex.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\hyperref\hyperref.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\kvsetkeys.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\infwarerr.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\etexcmds.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\pdfescape.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\pdftexcmds.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\ifluatex.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\ltxcmds.sty”)))
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\hycolor.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\xcolor-patch.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\hyperref\pd1enc.def”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\intcalc.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\00miktex\hyperref.cfg”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\kvoptions.sty”)
Implicit mode ON; LaTeX internals redefined
(“C:\Program Files\MiKTeX 2.7\tex\latex\ltxmisc\url.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\bitset.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\bigintcalc.sty”))
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\atbegshi.sty”))
*hyperref using default driver hpdftex*
(“C:\Program Files\MiKTeX 2.7\tex\latex\hyperref\hpdftex.def”
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\atveryend.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\rerunfilecheck.sty”
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\uniquecounter.sty”)))
(“C:\Program Files\MiKTeX 2.7\tex\latex\hyperref\puenc.def”))
(“C:\Program Files\MiKTeX 2.7\tex\latex\mycustompackage\mycommands.sty”)
(transfer.aux)
*geometry auto-detecting driver*
*geometry detected driver: pdftex*
(“C:\Program Files\MiKTeX 2.7\tex\context\base\supp-pdf.tex”
[Loading MPS to PDF converter (version 2006.09.02).]
) (“C:\Program Files\MiKTeX 2.7\tex\latex\hyperref\nameref.sty”
(“C:\Program Files\MiKTeX 2.7\tex\latex\oberdiek\refcount.sty”)
(“C:\Program Files\MiKTeX 2.7\tex\generic\oberdiek\gettitlestring.sty”))
(transfer.out) (transfer.out`

Qui è dove si ferma la compilazione, dopo un po’ riprende e scrive:
`
(“C:\Program Files\MiKTeX 2.7\tex\latex\amsfonts\umsa.fd”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\amsfonts\umsb.fd”)
(“C:\Program Files\MiKTeX 2.7\tex\latex\base\ulasy.fd”) [1{C:/ProgramData/MiKTe
X/2.7/pdftex/config/pdftex.map}]
pdfTeX warning (ext4): destination with the same i
dentifier (name{page.1}) has been already used, duplicate ignored

\relax
l.42
[1] [2 ] [3] (transfer.bbl [4]
[5] [6]) [7] (transfer.aux) )
(see the transcript file for additional information)

Output written on transfer.pdf (8 pages, 168239 bytes).
Transcript written on transfer.log.
`

I riferimenti al pacchetto mycustompackage.sty dipendono dal fatto che tutti i pacchetti caricati e i comandi li ho definiti in un mio pacchetto che ho chiamato mycustompackage.

Non so da che parte iniziare per trovare una soluzione (o quanto meno per capire perchè succede, e vedere se riesco ad aumentare la velocità di compilazione o mi devo rassegnare).

Vi ringrazio in anticipo per l’aiuto!
Se vedete qualche orrore “latexiano” ogni altro tipo di aiuto è apprezzato 🙂
Grazie mille, -Luca