Look at this message:

http://kerneltrap.org/mailarchive/linux-kernel/2007/10/3/328413

Here is the corresponding version on lkml.org:

http://lkml.org/lkml/2007/10/3/164

You will see the KernelTrap version is truncated right where the Japanese characters start. It seems it's an encoding issue, because the Japanese chars are not correctly displayed in the lkml.org version either, but at least the rest of the message is not truncated.