I originally put this in the Elements forum but as Adobe have yet to fix it and I'm not sure how to report it directly to Adobe I've put it here as well.
Trying to download ACR 5.6 for elements gives this error
The requested URL /pub/adobedobe/photoshop/cameraraw/win/5.x/Camera_Raw_5_6.zip was not found on this server.
You could report it on http://forums.adobe.com/community/general/adobedotcom_feedback
However the download does work, so maybe you should try again or use another computer.
Retrieving data ...