gistfile1.txt

WARNING: this version of the GNU libc requires kernel version
2.6.26 or later. Please upgrade your kernel before installing
glibc.

The installation of a 2.6 kernel _could_ ask you to install a new libc
first, this is NOT a bug, and should *NOT* be reported. In that case,
please add lenny sources to your /etc/apt/sources.list and run:
  apt-get install -t lenny linux-image-2.6
Then reboot into this new kernel, and proceed with your upgrade
dpkg: error processing /var/cache/apt/archives/libc6_2.13-38_i386.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
configured to not write apport reports
                                      Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.13-38_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)