Leverage browser caching not working and resources duplicating

I am having problems with my leverage browser caching. It seems that my resources are not fetched from cache and as you can see on the image below some of them are duplicating. I have these meta tag:

<meta http-equiv="Cache-Control" content="private, max-age=216000">

Also I got this on my .htaccess:

<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
ExpiresByType image/gif "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType text/css "access plus 1 month"
ExpiresByType application/pdf "access plus 1 month"
ExpiresByType text/x-javascript "access plus 1 month"
ExpiresByType application/x-shockwave-flash "access plus 1 month"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresDefault "access plus 2 days"

Thanks

via Chebli Mohamed