openSUSE 13.1: Lots of character encoding issues

Hello,

I have a newly installed openSUSE 13.1 with many character encoding issues.

Example 1 - Console:
linux@vm-os131:~/test> mkdir öäüßÖÄÜ
linux@vm-os131:~/test> ls
???????

Example 2 - Dolphin under KDE: the folder from Example 1 is displayed correctly, but when I e.g. create a file inside it and want to delete it again, I get "the file or folder xyz does not exist"

Example 3 - Windows-Share: On a share mounted with mount.cifs even in Dolphin the special characters are not displayed, whether or not I use the paramter "iocharset=utf8".

My Config:

linux@vm-os131:~/test> uname -a
Linux vm-os131 3.11.6-4-desktop #1 SMP PREEMPT Wed Oct 30 18:04:56 UTC 2013 (e6d4a27) x86_64 x86_64 x86_64 GNU/Linux

linux@vm-os131:~/test> locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

Setting LANG to de_DE.UTF-8 makes no difference.

Greetings
SH