As announced a long time ago, I have remove the old 0.1 install instructions from the tabs above that were confusing a lot of people. A lot has changed since 0.1, especially in the way Aegir is installed and the proper way to figure out how to install Aegir is to read
INSTALL.txt (select the version appropriate to the version you want to install, or use HEAD). Again, the rationale behind this move is that it was becoming too complicated to maintain multiple versions of the same document in the wiki.
Remember that you need to consult with the UPGRADE.txt file if you are installing over an older version of Aegir (again, select the version appropriate to the version you want to install, or use HEAD).
If there are any issues with the documentation, open a new issue (Component: Documentation) in the Hostmaster project.