A weird url problem

[eluser]eupho[/eluser]
hi!

an exemple is better than a big speach :

I can access to my controller admin by this link : http://dev.annoncesvelo.com//admin but not by this one : http://dev.annoncesvelo.com/admin

An idea, why CI needs an extra-slash?

My .htaccess

Code:

RewriteEngine on

RewriteCond $1 !^(index\.php|images|robots\.txt)
RewriteRule ^(.*)$ /index.php/$1 [L]

Thanks for helping a newbie