Status updated don't count towards the five posts, as they were used for spam just as much as actual forum posts before we instated this rule... and they can contain links and images too. Looking at your account just now and you should have made the required 5 posts, so if you're still seeing this message, please let me know.
EDIT: Sorry, misread your OP. Okay, I'll look into it. I suspect the GMCJam topic isn't being included either since the GMCJam forum was added after this rule was created.