version `libcrypto.so.10' not found

ldd /cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/lib-dynload/_hashlib.so

gives the following information

/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/lib-dynload/_hashlib.so: /lib/x86_64-linux-gnu/libcrypto.so.10: version `libcrypto.so.10' not found (required by /cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/lib-dynload/_hashlib.so)
linux-vdso.so.1 (0x00007ffc5998b000)
libssl.so.10 => /lib/x86_64-linux-gnu/libssl.so.10 (0x00007fbad6d47000)
libcrypto.so.10 => /lib/x86_64-linux-gnu/libcrypto.so.10 (0x00007fbad6904000)
libpython2.7.so.1.0 => /cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/libpython2.7.so.1.0 (0x00007fbad64fc000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fbad62dd000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fbad5eec000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fbad5ce8000)
libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007fbad5ae5000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fbad5747000)
/lib64/ld-linux-x86-64.so.2 (0x00007fbad71b5000)

I don't know why

version `libcrypto.so.10' not found

while

libcrypto.so.10 => /lib/x86_64-linux-gnu/libcrypto.so.10 (0x00007fbad6904000)

it couses problem with for example

asetup 20.7.8.6,64,slc6,here

then I get

manpath: warning: $MANPATH set, ignoring /etc/manpath.config
Using AtlasProduction/20.7.8.6 [cmt] with platform x86_64-slc6-gcc49-opt
at /cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8
Test area: /home/inga
manpath: warning: $MANPATH set, ignoring /etc/manpath.config
ERROR:root:code for hash md5 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5
ERROR:root:code for hash sha1 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha1
ERROR:root:code for hash sha224 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha224
ERROR:root:code for hash sha256 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha256
ERROR:root:code for hash sha384 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha384
ERROR:root:code for hash sha512 was not found.
Traceback (most recent call last):
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 147, in <module>
globals()[__func_name] = _get_hash(_func_name)
File "/cvmfs/atlas.cern.ch/repo/sw/software/x86_64-slc6-gcc49-opt/20.7.8/sw/lcg/releases/LCG_81f/Python/2.7.9.p1/x86_64-slc6-gcc49-opt/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha512