Comment 2 for bug 581020

... After the crash happened, and after a while, I started Update manager once again, but it said the following:

E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
E: _cache->open() failed, please report.

... Then I opened terminal and put the command required above. The result was:

misko@desktop:~$ sudo dpkg --configure -a
[sudo] password for misko:
Setting up linux-image-2.6.31-21-generic (2.6.31-21.59) ...
Running depmod.
update-initramfs: Generating /boot/initrd.img-2.6.31-21-generic
Running postinst hook script /usr/sbin/update-grub.
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.31-21-generic
Found initrd image: /boot/initrd.img-2.6.31-21-generic
Found linux image: /boot/vmlinuz-2.6.31-20-generic
Found initrd image: /boot/initrd.img-2.6.31-20-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Windows NT/2000/XP (loader) on /dev/sda1
/etc/grub.d/README: 2: All: not found
/etc/grub.d/README: 4: 00_*:: not found
/etc/grub.d/README: 5: 10_*:: not found
/etc/grub.d/README: 6: Syntax error: "(" unexpected
User postinst hook script [/usr/sbin/update-grub] exited with value 2
dpkg: error processing linux-image-2.6.31-21-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 linux-image-2.6.31-21-generic
misko@desktop:~$

... The second try to start Update Manager resulted in downloading remaining update files from repositories.
By the way, the installation of updated linux image: /boot/vmlinuz-2.6.31-20-generic some ten days ago went smoothly.