package update-manager 1:0.93.34 failed to install/upgrade: ErrorMessage: SystemError in cache.commit(): E:Sub-process /usr/bin/dpkg exited unexpectedly

Binary package hint: update-manager

Ubuntu 8.10 Intrepid Ibex for AMD+64
Kernel: 2.6.27-9-generic

Hi!

First of all:
1. English is not my mother tongue but I studied it when I was a child so I still remember a few words to express myself.
2. Linux is not my mother OS and I never studied it or worked with it before so I have no idea about settings and so.

Ok, let's go for it.

I guess the error happened when upgrading from Hardy Heron to Intrepid Ibex by writing on the bash "sudo do-release-upgrade -d" as seen on http://doc.ubuntu-es.org/Intrepid_Ibex/Actualizar

In a certain moment (I do not remember when exactly) I was asked to go on with the procedure (Y) or abort (N) or ask for details (D), I asked for Details and the system hung completely.

Well... is that on the front of my PC a pretty button? Let's press it and see what happens...

What is happening? I couldn't go further than Grub! I was entering several times in kernel recovering mode but the process froze once and once again. Suddenly the login screen appeared so I entered with my user and password.

Holy mother of pearl! My desktop was completely black. When I started to move the mouse desperately I discover two things:
1. There were still more than one work area on the Desktop, because by moving the scroll wheel I could see the animation of the change of work areas. From black screen to black screen. Big deal! :-(
2. On the right-down corner a message appeared in a box. You can see an screenshot (yes, it worked!) here: http://farm4.static.flickr.com/3295/3135964919_8db9e542de_o.png

After restarting with the bash for a couple of hundred times, I finally could recover the kernel so I'm writing this note on Ubuntu. Everything seems to be right again.

So I hope...

ProblemType: Package
Architecture: amd64
DistroRelease: Ubuntu 8.10
ErrorMessage: ErrorMessage: SystemError in cache.commit(): E:Sub-process /usr/bin/dpkg exited unexpectedly

NonfreeKernelModules: nvidia
Package: update-manager 1:0.93.34
PackageArchitecture: all
SourcePackage: update-manager
Title: package update-manager 1:0.93.34 failed to install/upgrade: ErrorMessage: SystemError in cache.commit(): E:Sub-process /usr/bin/dpkg exited unexpectedly
Uname: Linux 2.6.27-9-generic x86_64