Why the forum topics aren't ordered by replies date?

Hello folks!

I made a topic (http://forum.phalconphp.com/discussion/6573/disable-validation) a few days ago and replied today, but it is still on 3rd page, which means I'd probably don't receive any new replies. Is there a reason for this?

Thanks =)

You can use the Hot tab to see they ordered by reply date: http://forum.phalconphp.com/discussions/hot