What do all those LEDs mean on the arch pages?
The little LED-style images are intended to give a quick overview to all buildds of an arch. There a basically several types of status LEDs for the host itself and for the buildd in particular. More to come.
Host centric LEDs:
buildd centric LEDs:
The buildd host list is updated every 15 mins. You can see the time of last update on the buttom of the page.