12.04 - UnicodeDecodeError when running ubuntu-support-status

I had a problem during update 12.04 and asked the question yesterday.I tried the suggested solutions. Now I got the following message (update problem still remains):

thomas@thomas-Satellite-P200:~$ ubuntu-support-status 

Traceback (most recent call last): File "/usr/bin/ubuntu-support-status", line 79, in help=_("Show unsupported packages on this machine").decode(enc)) UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 13: ordinal not in range(128)

Any ideas?

Edit:

The topic yesterday was: Problem after updating 12.o4

Answer was to try one of the solutions of:

"How do I fix a “Problem with MergeList” or “status file could not be parsed” error when trying to do an update?"

I tried that and came up with the above file.

@ Florian Diesch:

"locale" created the following file:

thomas@thomas-Satellite-P200:~$ locale

LANG=C
LANGUAGE=de_DE:en
LC_CTYPE="C"
LC_NUMERIC=de_DE.UTF-8
LC_TIME=de_DE.UTF-8
LC_COLLATE="C"
LC_MONETARY=de_DE.UTF-8
LC_MESSAGES="C"
LC_PAPER=de_DE.UTF-8
LC_NAME=de_DE.UTF-8

LC_ADDRESS=de_DE.UTF-8
LC_TELEPHONE=de_DE.UTF-8
LC_MEASUREMENT=de_DE.UTF-8
LC_IDENTIFICATION=de_DE.UTF-8
LC_ALL=