Hi, sandrodz!
I had the same problem (not really the same). I wanted a single random post before my regular posts.
The problem is that the random post could be seing only when i was logged in, and the post wasn′t a random post (it always displayed the same post)
I reactivated all my plugins, and deleted the ones I was not using. It didnt work… Then I tried this solution from esmi (I just deleted the tag selection).
This worked for me! I hope this can help you… Here is the code I′m using:
<?php
$taggedposts = get_posts('category_name=Humor&showposts=1&orderby=rand');
foreach($taggedposts as $post) :
setup_postdata($post);?>
[ do stuff ]
<?php endforeach; ?>
