You know How When there are New Posts on a forum or thread the Icon Is Red, or gold for forums.

I can't figure out what's making it Switch Back, sometimes it keeps the Icons Red For Ages and Other Times it Changes really Quickly. Is there something wrong with It, I can't seem to Figure out any pattern to it.

Could we have a Clear New Posts button, which makes all the posts old so It's quicker to check for new ones.