Erreur en https avec internet explorer 8

[laurentlerouge]

Bonjour à tous.
Je suis nouvellement inscrit sur ce forum, je vous pose directement ma question, après quand même certaines recherches infructueuses concernant mon problème.
Mon site est installé sous Joomla 1.5.20 avec apache 2, mod_ssl et mod_rewrite activés, ssl activé pour l'administration et certaines pages du site, ainsi que la réécriture d'url.
L'erreur survient avec Internet Explorer et pas avec Firefox.
Le site semble pourtant fontionner correctement sous Internet Explorer mais dans mes logs Apache j'ai ceci :

[Wed Oct 06 08:34:00 2010] [notice] Apache/2.2.9 (Debian) mod_ssl/2.2.9 OpenSSL/0.9.8g configured -- resuming normal operations
[Wed Oct 06 18:51:16 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv ... &Itemid=58
[Wed Oct 06 18:51:22 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv/cms/
[Wed Oct 06 18:51:50 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv ... &Itemid=20
[Wed Oct 06 18:52:08 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv ... &Itemid=20
[Wed Oct 06 18:52:11 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv ... &Itemid=51
[Wed Oct 06 18:52:14 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv/cms/
[Wed Oct 06 18:52:21 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/:, referer: https://www.sologne-des-etangs.net/mcsv/cms/
[Wed Oct 06 19:07:42 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... /index.php
[Wed Oct 06 19:07:52 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... om_content
[Wed Oct 06 19:15:06 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... /index.php
[Wed Oct 06 19:15:11 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... com_config
[Wed Oct 06 19:15:22 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... /index.php
[Wed Oct 06 19:15:28 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... om_contact
[Wed Oct 06 19:15:31 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... e=mainmenu
[Wed Oct 06 19:15:38 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... om_modules
[Wed Oct 06 19:16:18 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... &task=view
[Wed Oct 06 19:17:26 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... pe=content
[Wed Oct 06 19:17:30 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... om_content
[Wed Oct 06 19:26:25 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... com_config
[Wed Oct 06 19:26:34 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... /index.php
[Wed Oct 06 22:29:21 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... /index.php
[Wed Oct 06 22:29:24 2010] [error] [client 192.168.1.50] File does not exist: /var/www/mcsv/cms/administrator/:, referer: https://www.sologne-des-etangs.net/mcsv ... com_config

Cette erreur ne survient que en https et que avec Internet Explorer.
Si je desactive la réécriture d'url, il y a toujours les erreurs.
Je précise que mon site fonctionne avec un certificat autosigné, si cela peut avoir une importance.
Quelqu'un aurait-il une idée ?
Merci d'avance.