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I can't upgrade linux-image-2.6.32-5-486 package to (2.6.32-25).
Current linux-image-2.6.32-5-486 (2.6.32-21). I got this:

root# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]?
Setting up linux-image-2.6.32-5-486 (2.6.32-25) ...
Running depmod.
Running update-initramfs.
update-initramfs: Generating /boot/initrd.img-2.6.32-5-486
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/initramfs-tools
2.6.32-5-486 /boot/vmlinuz-2.6.32-5-486
run-parts: executing /etc/kernel/postinst.d/zz-update-grub
2.6.32-5-486 /boot/vmlinuz-2.6.32-5-486
Killed
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 137
Failed to process /etc/kernel/postinst.d at
/var/lib/dpkg/info/linux-image-2.6.32-5-486.postinst line 799.
dpkg: error processing linux-image-2.6.32-5-486 (--configure):
 subprocess installed post-installation script returned error exit status 2
configured to not write apport reports
                                      Errors were encountered while processing:
 linux-image-2.6.32-5-486
E: Sub-process /usr/bin/dpkg returned an error code (1)
root#

root# cat  /var/lib/dpkg/info/linux-image-2.6.32-5-486.postinst

line 797:       if (-d "/etc/kernel/postinst.d") {
line 798:               print STDERR "Examining /etc/kernel/postinst.d.\n";
line 799:       system ("run-parts --verbose --exit-on-error --arg=$version " .
line 800:               "--arg=$realimageloc$kimage-$version " .
line 801:               "/etc/kernel/postinst.d") &&
line 802:           die "Failed to process /etc/kernel/postinst.d";
line 803:       }