Strange duplicate post with jetpack and polylang

Hi i don’t know what plugin do this strange issue,jetpack or polylang, but i’ll post the same thing both support forum.
Here is my configuration:
WordPress version is 3.5.1
Jetpack Only for Admins 1.1
Jetpack Version 2.2.2
Polylang 1.0.4

Here is the test site with infinite scroll enabled by pushing the button
http://filmandnovel.altervista.org/
When i push the button “older entries” for each post there will be a fake duplicate post. In my case i have two english post and there are two “fake duplicate post”, if i’ll post another one in english section when i push the “older entries” button, there will be three “fake duplicate post”
The screenshot explain better i suppose:
http://imageshack.us/content_round.php?page=done&l=img402/7043/testpl.jpg

If i disable the infinite scroll function and i use the wordpress standard older entries, no “fake duplicate post” will appear.
For example in my official website:
http://www.bookandnegative.com

Sorry for my bad english, and in order to finish i’ll write here that there is another post here followed by Jeremy Herve, i’m sorry to write here and do crossposting, but my older post was closed without any reason ^^

http://wordpress.org/support/topic/breaks-sidebar-login-plugin?replies=8

Thanks for your attention 🙂

http://wordpress.org/extend/plugins/jetpack/

[ Duplicate http://wordpress.org/support/topic/strange-duplicate-post-with-polylang-and-jetpack-1?replies=1 Closing. Please work with one thread, you can tag the other one Jetpack too. ]