TOPIC: Missing language item in installation?

The component works fine after installation.
After testing I see a strange comment in JomSocial: JOMSOCIAL_ADDJOMSOCIAL_COMMENT_OWNwall

Can somebody tell me what the problem is?
Thanks in advance!

Hey Ivo,
You have enabled the jomsocial wall plugin? Is this correct? I need to reproduce this and see what is going on there, so please tell me what your installation looks like.
Thanks,
Daniel

Hey Daniel,
The plugin is enabled. See the attachement.

I'm using the following versions:
Joomla 2.5.18
JomSocial 3.1.0.4

And a lot of extra components, modules and plugins.