/var/log/apt# cat history.log 

Start-Date: 2012-05-20  15:59:34
Commandline: apt-get upgrade
Upgrade: dmsetup:i386 (1.02.48-4ubuntu7, 1.02.48-4ubuntu7.1), hdparm:i386 (9.37-0ubuntu3, 9.37-0ubuntu3.1), vim-common:i386 (7.3.429-2ubuntu2, 7.3.429-2ubuntu2.1), python-software-properties:i386 (0.82.7, 0.82.7.1), update-manager-core:i386 (0.156.14, 0.156.14.4), libsasl2-modules:i386 (2.1.25.dfsg1-3, 2.1.25.dfsg1-3ubuntu0.1), apport:i386 (2.0.1-0ubuntu5, 2.0.1-0ubuntu7), libtasn1-3:i386 (2.10-1ubuntu1, 2.10-1ubuntu1.1), libdevmapper1.02.1:i386 (1.02.48-4ubuntu7, 1.02.48-4ubuntu7.1), vim-tiny:i386 (7.3.429-2ubuntu2, 7.3.429-2ubuntu2.1), sudo:i386 (1.8.3p1-1ubuntu3, 1.8.3p1-1ubuntu3.2), python-problem-report:i386 (2.0.1-0ubuntu5, 2.0.1-0ubuntu7), vim:i386 (7.3.429-2ubuntu2, 7.3.429-2ubuntu2.1), vim-runtime:i386 (7.3.429-2ubuntu2, 7.3.429-2ubuntu2.1), libsasl2-2:i386 (2.1.25.dfsg1-3, 2.1.25.dfsg1-3ubuntu0.1), openssl:i386 (1.0.1-4ubuntu3, 1.0.1-4ubuntu5), python-apport:i386 (2.0.1-0ubuntu5, 2.0.1-0ubuntu7), upstart:i386 (1.5-0ubuntu5, 1.5-0ubuntu7), libssl1.0.0:i386 (1.0.1-4ubuntu3, 1.0.1-4ubuntu5)
End-Date: 2012-05-20  16:00:02

Start-Date: 2012-05-21  08:58:07
Commandline: apt-get dist-upgrade
Install: linux-image-3.2.0-24-virtual:i386 (3.2.0-24.37)
Upgrade: linux-image-virtual:i386 (3.2.0.23.25, 3.2.0.24.26), linux-virtual:i386 (3.2.0.23.25, 3.2.0.24.26)
End-Date: 2012-05-21  08:58:22

Start-Date: 2012-05-22  10:57:01
Commandline: apt-get upgrade
Upgrade: linux-image-3.2.0-24-virtual:i386 (3.2.0-24.37, 3.2.0-24.38), libxml2:i386 (2.7.8.dfsg-5.1ubuntu4, 2.7.8.dfsg-5.1ubuntu4.1)
End-Date: 2012-05-22  10:57:15

Start-Date: 2012-05-23  13:27:34
Commandline: apt-get upgrade
Upgrade: resolvconf:i386 (1.63ubuntu11, 1.63ubuntu14)
End-Date: 2012-05-23  13:27:38