firefox can't run

some libraries has tail extension *.30, dunno why.
here is how to fix it.

localhost:/usr/lib$ ls *.30
libfreebl3.so.30 libnssckbi.so.30 libsmime3.so.30
libgnutls.so.30 libnssdbm3.so.30 libsoftokn3.so.30
libnss3.so.30 libnssutil3.so.30 libssl3.so.30

localhost:/usr/lib$ sudo mv libfreebl3.so.30 libfreebl3.so
localhost:/usr/lib$ sudo mv libnssckbi.so.30 libnssckbi.so
localhost:/usr/lib$ sudo mv libsmime3.so.30 libsmime3.so
localhost:/usr/lib$ sudo mv libgnutls.so.30 libgnutls.so
localhost:/usr/lib$ sudo mv libnssdbm3.so.30 libnssdbm3.so
localhost:/usr/lib$ sudo mv libsoftokn3.so.30 libsoftokn3.so
localhost:/usr/lib$ sudo mv libnss3.so.30 libnss3.so
localhost:/usr/lib$ sudo mv libnssutil3.so.30 libnssutil3.so
localhost:/usr/lib$ sudo mv libssl3.so.30 libssl3.so