I just got my HG box set up last night with the default image.
From the Wiki I determined the telnet/ftp login (root/kuroadmin) which works fine.
* The default root password for telnet in EMode on the KuroBoxHG? is "kuroadmin"
* The default root password for the web interface on the KuroBoxHG? is "webadmin"
However for the web login the supplied info (root/webadmin) doesn't work.
Well, that is odd. I copied that part of the FAQ over from the old wiki. I could not find the password and doing a google search brought me to the old wiki.
I am pretty sure the login to the web interface worked for me. Unfortunately I cannot verify it anymore, as I went on to install Gentoo.
I used these instructions to install the image: