Installation problem on Fedora 15

Dear NCL users,

What can I do resolve this problem.
I download this ncl ncl_ncarg-6.0.0.Linux_RedHat_x86_64_gcc412.tar.gz

But, I am wondering, when I trying to use it, this error appear:

ncl: error while loading shared libraries: libssl.so.6: cannot open shared object file: No such file or directory

Here some informations of my system

uname -a
Linux hpz800 2.6.38.8-35.fc15.x86_64 #1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

gcc --version
gcc (GCC) 4.6.0 20110530 (Red Hat 4.6.0-9)
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Thanks for your help

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Received on Thu Jul 28 01:24:28 2011