The text you see in sector space on sector borders is not a localization issue, you will sadly also see it in the English client.
The signs in bases are related to this issue and can be seen in the English client as well.
That is simply not true!
When I'm home i will do some Screenshots. I'm currently at work, so it has to wait until the evening.
Edit: So. Here are the Screenshots. As you can see. In the English Client, the Signs are ok. In the German Version you see only the path that leads to the Texturefile or something. This bug in the Game since the Beta. It has been reported many times, but nothing has changed!