http://forums.gentoo.org/viewtopic.php?t=139352&highlight=kbd1+08r5
I too ran into this problem running the JFS file system. A note should be added to the installation docs, at the very least. Another thread about the problem: http://forums.gentoo.org/viewtopic.php?t=153261
We should make the mount command issue additionally the "-o iocharset=utf8" option when mounting JFS partitions.
BTW, this one is a duplicate of http://bugs.gentoo.org/show_bug.cgi?id=42859 It's not a problem with the version of kbd, but a problem with the filesystem or all the kbd packages.
ok, I think I've fixed this by manually unpacking in the ebuild instead of using the portage unpack function. Please re-open if it's still broken for you. I've also marked 1.12-r2 stable