root@vin-vin01:~# apt-get remove oracle-java7-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  bluez-alsa:i386 libsdl-ttf2.0-0:i386 libgconf-2-4:i386 libatk1.0-0:i386 libstdc++5:i386 ia32-libs-multiarch:i386 libgail18:i386 libao-common libqt4-qt3support:i386 libunistring0:i386
  libcupsimage2:i386 libidn11:i386 libnss3:i386 libcaca0:i386 gtk2-engines:i386 libgudev-1.0-0:i386 libcairo-gobject2:i386 libavc1394-0:i386 ia32-libs libaio1:i386 odbcinst1debian2:i386
  libqt4-test:i386 libqt4-designer:i386 libsdl-mixer1.2:i386 libcap2:i386 libproxy1:i386 ibus-gtk:i386 libdbus-glib-1-2:i386 libtdb1:i386 libspeex1:i386 libgomp1:i386 libibus-1.0-0:i386
  libcairo2:i386 libcanberra-gtk-module:i386 libcanberra0:i386 gtk2-engines-murrine:i386 libwavpack1:i386 libqt4-opengl:i386 libsoup-gnome2.4-1:i386 gstreamer0.10-plugins-good:i386 libc6-i386
  lib32gcc1 librsvg2-common:i386 libiec61883-0:i386 lib32asound2 libgdk-pixbuf2.0-0:i386 libsdl-image1.2:i386 libpixman-1-0:i386 libsdl1.2debian:i386 libxaw7:i386 libgdbm3:i386 libcurl3:i386
  libesd0:i386 libmikmod2:i386 libxft2:i386 libcroco3:i386 libpulse-mainloop-glib0:i386 libaa1:i386 libao4:i386 libxmu6:i386 libcanberra-gtk0:i386 libvorbisfile3:i386 esound-common
  libqt4-svg:i386 libgail-common:i386 libraw1394-11:i386 libnspr4:i386 libshout3:i386 libdv4:i386 gstreamer0.10-x:i386 libgettextpo0:i386 libsdl-net1.2:i386 libjasper1:i386 libgnome-keyring0:i386
  libxtst6:i386 gtk2-engines-pixbuf:i386 libtag1c2a:i386 librsvg2-2:i386 libssl0.9.8:i386 libmad0:i386 gtk2-engines-oxygen:i386 xaw3dg:i386 libpango1.0-0:i386 libpulsedsp:i386 lib32stdc++6
  libxcb-render0:i386 libodbc1:i386 libqt4-scripttools:i386 librtmp0:i386 libxp6:i386 libxcb-shm0:i386 libgtk2.0-0:i386 glib-networking:i386 libsoup2.4-1:i386 libtag1-vanilla:i386
  libaudiofile1:i386
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  oracle-java7-installer
0 upgraded, 0 newly installed, 1 to remove and 13 not upgraded.
1 not fully installed or removed.
After this operation, 82.9 kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 277143 files and directories currently installed.)
Removing oracle-java7-installer ...
update-alternatives: error: unknown argument `build'
dpkg: error processing oracle-java7-installer (--remove):
 subprocess installed pre-removal script returned error exit status 2
Downloading...
--2012-11-28 13:33:05--  http://download.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-x64.tar.gz
Resolving download.oracle.com (download.oracle.com)... 217.27.50.197
Connecting to download.oracle.com (download.oracle.com)|217.27.50.197|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-x64.tar.gz [following]
--2012-11-28 13:33:05--  https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-x64.tar.gz
Resolving edelivery.oracle.com (edelivery.oracle.com)... 95.101.158.174
Connecting to edelivery.oracle.com (edelivery.oracle.com)|95.101.158.174|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://download.oracle.com/errors/download-fail-1505220.html [following]
--2012-11-28 13:33:10--  http://download.oracle.com/errors/download-fail-1505220.html
Connecting to download.oracle.com (download.oracle.com)|217.27.50.197|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5307 (5.2K) [text/html]
Saving to: `./jdk-7u3-linux-x64.tar.gz'

     0K .....                                                 100% 1.45M=0.003s

2012-11-28 13:33:10 (1.45 MB/s) - `./jdk-7u3-linux-x64.tar.gz' saved [5307/5307]

Download done.
sha256sum mismatch jdk-7u3-linux-x64.tar.gz
Oracle JDK 7 is NOT installed.
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 oracle-java7-installer
E: Sub-process /usr/bin/dpkg returned an error code (1)