tout est bien installé sur www.fede-ulg.org/dolibarr-1.1.0/htdocs (login) 
Tu peux toujours essayé le script d'installation /htdocs/install.php  son diagnostic : everything OK

Mais par contre au niveau de PEAR il y a un problème: 

/usr/share/pear/Auth/Container/DB.php  (ligne 130)  
il s'agit apparemment d'un include qui ne trouve pas sa source 

seulement il reste un petit problème au niveau de pear, je copie une discussion que j'ai eue sur irc  (#PEAR sur Efnet) dont j'enlève qq lignes inutiles


&lt;tyio&gt; well when I try to login I get this error message : Call to undefined function: isconnection() in /usr/share/pear/Auth/Container/DB.php on line 133
&lt;tyio&gt; I tried to reinstall PEAR and to reinstall some different versions of Auth but same error
&lt;norbert_m&gt; are you sure you are using the latest version of Auth?
&lt;tyio&gt; yes
&lt;norbert_m&gt; I have DB::isConnection in line 130
&lt;norbert_m&gt; have you got the DB package installeD?
&lt;tyio&gt; well I had that error too on line 130 when I was using th latest version
&lt;tyio&gt; now it's 1.1
&lt;tyio&gt; and it was 1.2.3
&lt;norbert_m&gt; well it's a static call to DB::isConnection so I think it simply cannot find the DB package on your system
&lt;norbert_m&gt; or you have an old version of DB
&lt;tyio&gt; well the DB.php is included in Auth/Container isn't it ?
&lt;dufuz_&gt; no
&lt;norbert_m&gt; no, it's another one
&lt;norbert_m&gt; do you think it includes itself? :)
&lt;norbert_m&gt; require_once 'DB.php';
&lt;norbert_m&gt; in DB.php? :)
&lt;norbert_m&gt; install the DB package and it'll probably work 
&lt;tyio&gt; wait the DB package is there
&lt;tyio&gt; at least there is a DB directory in my /usr/share/pear
&lt;norbert_m&gt; does it have a file named DB.php inside it?
&lt;norbert_m&gt; no. it should be outside that directory
&lt;norbert_m&gt; DB.php should be in the same directory as the DB directory is
&lt;norbert_m&gt; try simply  pear install DB
&lt;tyio&gt; no it doesn't , you were absolutely right
&lt;norbert_m&gt; does auth work now then?
&lt;tyio&gt; well according to my error message it's the DB.php included in Auth that doesn't work ... 
&lt;norbert_m&gt; still the same error?
&lt;tyio&gt; yes
&lt;norbert_m&gt; your include_path is probably not set correctly
&lt;norbert_m&gt; try echo ini_get('include_path'); at the top of your script
&lt;norbert_m&gt; and show me the output
&lt;tyio&gt; ok I'm trying
&lt;tyio&gt; thnak you
&lt;norbert_m&gt; nm
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&lt;tyio&gt; You mean on the top of the script I'm running?
&lt;tyio&gt; or on the top of DB.php ?
&lt;norbert_m&gt; your scrpt
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&lt;tyio&gt; it doesn't display anything 
&lt;norbert_m&gt; could you paste your script to http://www.pastebin.com and paste the url here?
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&lt;tyio&gt; ok
&lt;tyio&gt; wow I didn't know pastebin.com!!! just what I'm looking for 
&lt;tyio&gt; http://www.pastebin.com/52177
&lt;norbert_m&gt; eh.. I was wondering about how that 'include_path' echo was embedded in your script.. :)
&lt;tyio&gt; Oh I just erased the line
&lt;norbert_m&gt; anyways, I think your include_path is not set correctly
&lt;norbert_m&gt; read http://pear.php.net/manual/en/installation.manually.php please
&lt;norbert_m&gt; especially the third paragraph
&lt;norbert_m&gt; "Adjust your include_path directive"
&lt;tyio&gt; Excuse my noobiness ;) but 'include_path'  is a php function or you meant &lt;insert your path here&gt; ??
&lt;tyio&gt; ok
&lt;norbert_m&gt; pear path should be the first directory in include_path
&lt;norbert_m&gt; no, include_path is an ini-setting
&lt;tyio&gt; ok
&lt;norbert_m&gt; you can print its actual value typing _exactly_, without any modifications:
&lt;norbert_m&gt; echo ini_get('include_path');

voilà mon numéro est toujours le 0485/897152 tél moi si probleme