6 hour update. Now both sites are up but they are both listed as down and with "Keyword Found".
http://cl.ly/image/2L1V1A2K180f
Liking the service a lot by the way! That's why I am reporting what I find.
Seeing the same here. Maybe the CNAME is tripping it up.
http://cl.ly/image/1Y1U3b0z2U0U
http://cl.ly/image/3c0e38312a2W
edit: If it is of any use for debugging, these sites' IDs are: 775909552 (up) and 775909549 (down).