Downgrade to Leopard on new mac mini

I just got my new mac mini two weeks ago, and I've had enough of Snow Leopard, it's cack! Is it possible to downgrade to Leopard on the new system? it had SL pre-installed. I've put a Leopard retail disc in, but nothing is happening, it' been over an hour or so.

It is possible, I have done it on multiple occasions.
First, back up your files. Anything you want to keep. Then, insert your leopard install CD and shut down the computer. Boot the computer while holding "C". It should boot either into an installer program, or into OSX. Follow the instructions that pertain to your situation.
INSTALLER PROGRAM:
Open the "Utilities" menu in your menu bar and click on "Disk Utility". Select your hard drive in the sidebar. Be sure to select something like "180gb WDC...", not "Macintosh HD". Then, go to the "Erase tab. Set the format to "Mac OS Extended (Journaled)", and the name to "Macintosh HD". Click Erase. After you have done that, reboot and hold "C" on boot. Install Mac OSX as normal.
OSX:
Go to /Applications/Utilities/Disk Utility and open the application.
Select your hard drive in the sidebar. Be sure to select something like "180gb WDC...", not "Macintosh HD". Then, go to the "Erase tab. Set the format to "Mac OS Extended (Journaled)", and the name to "Macintosh HD". Click Erase. After you have done that, reboot and hold "C" on boot. Install Mac OSX as normal.
This should work and you will have downgraded to leopard. I'm thinking of doing the same after some of my software stopped working.

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