Comment 18 for bug 1012627

Memtest finished without errors. So if really a hardware issue, it does not seem to be the memory.

Tested on a second machine with still Ubuntu 10.04, kernel 2.6.32-41-generic-pae #90-Ubuntu SMP Tue May 22 12:48:11 UTC 2012 i686 GNU/Linux and apparmor 2.5.1 - works - no issue with this configuration. Hardware is the same (both tested laptops have the same hardware specifications).

The second (working) machine has the following related packages installed:
apparmor
apparmor-utils
libapparmor-perl
libapparmor1

The Ubuntu 12.04 only has apparmor and dh-apparmor installed; and apparmor-utils, libapparmor-perl and libapparmor1 are missing. I wonder if those modules would create a difference. Tried installing apparmor + libapparmor1 + apparmor-utils (the latter asks a lot of perl stuff to be installed too).

I investigated dh-apparmor - that seems to be a dependency of alien and google-earth. Even when removing apparmor completely, the dh-apparmor remains and if I want to uninstall that also, it wants to uninstall alien and google-earth also.

Now the 12.04 machine has the following installed:
apparmor
apparmor-utils
dh-apparmor
libapparmor-perl
libapparmor1

First test after these changes: Virtual Machine booted ok - I was happy - too early. Second and third attempt after another reboot (to make sure) caused again the freeze. I will attach another kernel log where the freeze occurred at 1:58 and next boot at 2:03.