But then again, when comparing its features and the customizations that it lets you do, it's way superior to the PDF reader that Natty comes with.
The Adobe reader also installs a plug-in for your Firefox web browser as well. Other than Zoom-in/out, select text, search for certain text/words, save, print, edit header information (title, author, etc where possible), add passwords... just have a look at the below screenshot of its main "options" window and tell me you aren't impressed ;-).
Anyhow, whatever your reasons are, if all you want is to know how to install Adobe PDF reader in Ubuntu 11.04 Natty Narwhal, then this is how you do it!.
Open your Terminal and enter the below command.
sudo add-apt-repository "deb http://archive.canonical.com/ natty partner" && sudo apt-get updateThat should do it.
sudo apt-get install acroread