They have a lot of down and up times, the longest they've gone down was a week, but I'm sure they'll be back up soon.
From a conversation with Spoileriffic (a reliable insider whose posted script, images and other confirmed details related to ROTS):
When Yoda and Obi-Wan come back to the Jedi Temple there are clones disguised as Jedi out in front of the temple; wearing Jedi robes over their armor (helmets removed).
The clones disguise themselves in the robes so the Jedi will think it is safe to approach them, putting them right in firing range.
As they walk towards the clones the Jedi are not fooled, Yoda tells Obi-Wan to stay back and Yoda goes forward to converse with the "Jedi."
Yoda uses the force to blast the guys away, throwing some of the clones into walls and other debris. Other clones (not in disguise) run up to offer assistance to their fallen soldiers, but Yoda ignites his lightsaber and promptly dismembers them.
After this, Obi-Wan and Yoda enter the temple..
This was in a rough version of the movie Spoileriffic saw, but there are no guarantees it makes it to the final product.