Disable Dashboard on Mac OS X

Maybe you have same experience like I did. I have limitted physical memory installed on my notebook. But Dashboard occupied a not small portion of memory. Looking arround I got this url help me to disable Dashboard.
http://www.macworld.com/weblogs/macosxhints/2005/08/disabledashboard/index.php
 Here are the steps:

Open Terminal
Issue command in subsequent:

defaults write.com.apple.dashboard mcx-disabled -boolean YES
killall Dock