http://wpml.org/forums/topic/how-to-show-popular-posts-in-each-language-respectively/
That help? or these note from my developer:
Popular Posts plugin is not compatible with WPML. What makes it even worse is that the plugin directly writes to and reads from the database instead of (properly) using the WordPress API.
It is therefore impossible for me to make the plugin work correctly and you will need to wait until the plugin author feels like implementing this “feature”.
Same problem with
WP Minify
This plugin uses the Minify engine to combine and compress JS and CSS files to improve page load time.
Version 1.2.0 | By Thaya Kareeson
Only Setting was for Minify HTML,
CSS and JS where off