I've noticed http://www.ubuntulinux.jp/ , Ubuntu-ja project. It distributes unofficial ubuntu 5.04 Japanese install CD image. It's nice, but I feel anxious about their distribution.

According the "Unofficial Ubuntu 5.04 Japanese install CD image", it provides some software that I suspect as non-free. You can find them at http://archive.ubuntulinux.jp/ubuntu-ja/hoary-ja/

• IPA font. AFAIK, it is only accepted to be redistributed only if it is distributed along with a result of project supported by IPA. I know scim-anthy and scim-prime may be result of improvement of japanese input method on open source desktop environment in 2004 1st half open source software base consolidation project by IPA. I'm not sure this means (separated deb files along with IPA result) of distribution are acceptable or not.
• acroread. ubuntu-ja got permission from adobe? I don't know...
• realplayer. RealPlayer10 installer was GPLed but RealPlayer10 itself is not free software, it's it? their realplayer package contains binaries... (and copyright file is the installer's.)
• mplayer related package, such as mplayer-586, w32codecs. But I can't find them on the ubuntu-ja apt line.
• sun-j2re1.5. ubuntu-ja modified RPM or self-extracting file to deb package? if so, do they violate binary code licence agreement? Anyway, I can't find sun-j2re1.5 package on the ubuntu-ja apt line.

I'm happy if someone dispel these license violation suspicions...