Как правильно установить ant 1.8 на Ubuntu 11.04

Я попытался установить ant 1.8 на Ubuntu 11.04 box, используя следующие инструкции:

http://www.thegeekwork.com/how-to-install-ant-1-8-2-using-ppa-on-ubuntu/

и когда я перечисляю, что он установил, я получаю следующее:

$ dpkg -L ant
/.
/usr
/usr/bin
/usr/share
/usr/share/maven-repo
/usr/share/maven-repo/org
/usr/share/maven-repo/org/apache
/usr/share/maven-repo/org/apache/ant
/usr/share/maven-repo/org/apache/ant/ant
/usr/share/maven-repo/org/apache/ant/ant/1.8.2
/usr/share/maven-repo/org/apache/ant/ant/1.8.2/ant-1.8.2.pom
/usr/share/maven-repo/org/apache/ant/ant/debian
/usr/share/maven-repo/org/apache/ant/ant/debian/ant-debian.pom
/usr/share/maven-repo/org/apache/ant/ant-launcher
/usr/share/maven-repo/org/apache/ant/ant-launcher/1.8.2
/usr/share/maven-repo/org/apache/ant/ant-launcher/1.8.2/ant-launcher-1.8.2.pom
/usr/share/maven-repo/org/apache/ant/ant-launcher/debian
/usr/share/maven-repo/org/apache/ant/ant-launcher/debian/ant-launcher-debian.pom
/usr/share/maven-repo/org/apache/ant/ant-parent
/usr/share/maven-repo/org/apache/ant/ant-parent/1.8.2
/usr/share/maven-repo/org/apache/ant/ant-parent/1.8.2/ant-parent-1.8.2.pom
/usr/share/maven-repo/org/apache/ant/ant-parent/debian
/usr/share/maven-repo/org/apache/ant/ant-parent/debian/ant-parent-debian.pom
/usr/share/ant
/usr/share/ant/bin
/usr/share/ant/bin/ant
/usr/share/ant/bin/complete-ant-cmd.pl
/usr/share/ant/bin/antRun
/usr/share/ant/bin/antRun.pl
/usr/share/ant/bin/runant.pl
/usr/share/ant/lib
/usr/share/ant/etc
/usr/share/ant/etc/ant-bootstrap.jar
/usr/share/doc
/usr/share/doc/ant
/usr/share/doc/ant/copyright
/usr/share/doc/ant/README.gz
/usr/share/doc/ant/README.Debian
/usr/share/doc/ant/changelog.Debian.gz
/usr/share/man
/usr/share/man/man5
/usr/share/man/man5/build.xml.5.gz
/usr/share/man/man1
/usr/share/man/man1/ant.1.gz
/usr/share/java
/usr/share/java/ant-launcher-1.8.2.jar
/usr/share/java/ant-1.8.2.jar
/usr/bin/ant
/usr/share/maven-repo/org/apache/ant/ant/1.8.2/ant-1.8.2.jar
/usr/share/maven-repo/org/apache/ant/ant/debian/ant-debian.jar
/usr/share/maven-repo/org/apache/ant/ant-launcher/1.8.2/ant-launcher-1.8.2.jar
/usr/share/maven-repo/org/apache/ant/ant-launcher/debian/ant-launcher-debian.jar
/usr/share/ant/lib/ant-launcher.jar
/usr/share/ant/lib/ant.jar
/usr/share/java/ant-launcher.jar
/usr/share/java/ant.jar
/usr/share/java/ant-bootstrap.jar

таким образом, казалось бы, был установлен ant 1.8. Однако, когда я проверяю версию ant, я все равно получаю ant 1.7:

$ /usr/bin/ant -version
Apache Ant version 1.7.0 compiled on December 13 2006

любые идеи о том, как получить Ant 1.8 на этом ящик?

спасибо!