We have a joke around here that if you get a job at Oracle out of college the first project they put you on is the Oracle Universal Installer. The thing has never worked. If you want to entertain yourself for a couple of weeks, try installing the latest version of the Oracle Database on the latest version of Oracle Linux. Oh, and try doing something "advanced" like using a non-default block size for the database. There is a little check box for that, but it doesn't work. You'll end up hand-editing a lot of Perl and Korn shell scripts and essentially running (and re-running) the whole install by hand. It's ridiculous. Once you get it running the software is amazing. Obviously they are capable of writing an installer. They just don't care.