[Plugin: Sociable] Facebook Like Button

When i click on the FB like button at the bottom of a page or post, not all of them show up on my FB page under recent activity. Others that do work i find that clicking on one adds a Like to my recent activity then if i go to another post that works and click the like button there, it removes the previously added like even though it’s a different post that i’m likeing?

http://ww.wp.xz.cn/extend/plugins/sociable/