My post are not visible and they are checked

[feet01]

Yesterday, I posted two or three replies and for all of hem I got this message after hitting 'reply':

Your post will not be visible until a moderator has approved it for posting.

I've checked today and I see that those posts are not visible.

I've posted here today - and this post is visible right away:
http://www.akiba-online.com/showthread.php?t=1341156&p=2590553&viewfull=1#post2590553

I also posted here, but I got the same message from the forum (that my post will be visible later after checking):
http://www.akiba-online.com/showthread.php?t=5155&page=15
...but neither the post from yesterday or today's isn't visible.

So, what is happening here?

 

[feet01]

However, I see that this post is visible right away. So, why do I get that message and why some of the posts are not 'published'?