When a page loads such as when starting a thread and most other pages there is a dead white space above and below the secondary header. See the image below. This dead space normally would not be an issue but at least of OS X Safari it is loaded last (or due to some sort of auto adjustment at the end). And because is it last there is a delay. As such, one thinks the page is loaded, clicks on a thread yet one is really clicking somewhere else on the page because it is not yet fully loaded. That is annoying. It is also annoying to have the page jump around.

At the end of the day there is no need for this dead white space. So the page loading needs to be tightened up.