There is a plugin called "Improved Include Page" which allows to include content of a page into another page.
So, say that we have Page1. We created Page2 that includes Page1 by using the shortcode [include-page id="1"]. When Page2 is rendered you will see 2 social media bars; one after the text included from Page1, and another for Page2 itself.
It appears that Sociable for WordPress 3.0 plugin appends the social media bar after rendering any page in WordPress, even if included from another page.
I am requesting to solve this problem in the next version of the plugin by hooking the social media bar on the container page only, or on the last appearance of the hook in the page.
It is also worth noting that even if Page1 has sociable disabled. if Page2 includes Page1, 2 social media bars will still appear; this is because the plugin enabled the hooking of the bars on the container page but has hooked it on any appearance of the hook. You see what I mean?