I've discovered this same issue with scheduled posts. My blog is new and made the choice to use wordpress due to high ratings, features, support, and of course the scheduling of posts at given time. Now a key feature is broken (for months it seems) and can't find any staff support to solve the issue
Even if the triggering is required, why doesn't it simply activate eventually?! Why does the post move to MISSED SCHEDULE !!
I've made 4 posts in a row, scheduled 5 mins apart
Waited till after the schedule time, then load the blog from another browser like IE, or another PC (so no cookie issues)
NOTHING shows up
I've just read many other threads of users with this problem, and the usual suggestion of http://en.support.wordpress.com/posts/schedule-a-post/ has either already been followed correctly, or makes no difference
Someone has suggested this is the correct staff monitored thread for this issue - there appears to be no responses or any resolution in the last 10 days. I may have to create my own thread to get some due attention to solving this.
My blog is going live August 1st, and providing scheduled daily updates is key. Hope someone cares to do something... or will result in taking blog elsewhere, and the potential for 2 month trial to become a paying customer with premium features walks away, severely burned off