libc6

I have a machine which is debian lenny
and I have tried to upgrade the package libc6. I was having libc6 2.5-11

I install the package via dpkg and I got errors

=========
mchine:~/manual_packages# dpkg -i ./libc6_2.7-13_amd64.deb
(Reading database ... 40922 files and directories currently installed.)
Preparing to replace libc6 2.5-11 (using ./libc6_2.7-13_amd64.deb) ...
Checking for services that may need to be restarted...
Checking init scripts...
Unpacking replacement libc6 ...
dpkg: error while cleaning up:
subprocess rm cleanup killed by signal (Segmentation fault)
Setting up libc6 (2.7-13) ...
Installing new version of config file /etc/gai.conf ...
Installing new version of config file /etc/init.d/glibc.sh ...
/var/lib/dpkg/info/libc6.postinst: line 343: 29706 Segmentation fault grep -q '^include /etc/ld.so.conf.d/.*\.conf$' /etc/ld.so.conf
/var/lib/dpkg/info/libc6.postinst: line 343: 29707 Segmentation fault rm -f /etc/ld.so.hwcappkgs
dpkg: error processing libc6 (--install):
subprocess post-installation script returned error exit status 139
Errors were encountered while processing:
libc6
========

I have a terminal opened but I cannot execute any command.
ie:
# ls
Segmentation fault

I cannot open a new connection via ssh

I am not physically in front of the machine since is located to a different country
If I restart the machine is going to be the same problem?

Many Thanks,
Antonis