Hi,

I forgotten to add that can't start X in 2013.09 (2013.02 is OK):
Have a strange results (same result using x in menu):

# startx
xauth: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libXau.so.6: cannot read file data: Input/output error
xauth: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libXau.so.6: cannot read file data: Input/output error
xauth: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libXau.so.6: cannot read file data: Input/output error
xinit: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libXau.so.6: cannot read file data: Input/output error
xauth: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libXau.so.6: cannot read file data: Input/output error

# ls -l /usr/lib/x86_64-linux-gnu/libXau.so.6
lrwxrwxrwx 1 root root 15 wrz 28 13:57 /usr/lib/x86_64-linux-gnu/libXau.so.6 -> libXau.so.6.0.0

# file /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0: ERROR: cannot read `/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0' (Input/output error)

# ls -l /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
-rw-r--r-- 1 root root 14544 cze 14 20:26 /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0

regards,
-a