Windows 8 Preview on VirtualBox

Microsoft Windows 8 Consumer Preview or Enterprise Preview will run perfectly on VirtualBox virtual machine. However, after I installed VirtualBox Guest Additions, Microsoft Windows 8 Preview did not run correctly. I could not open my email client or desktop. So, I wiped out the virtual machine and start over without install Guest Addition.

Silverlight on Ubuntu

1. Using Firefox browser to download Moonlight plugin from http://go-mono.com/moonlight/ 
2. Following instruction to install the plugin and restart browser.
3. Go back to the web page running Silverlight for example http://www.pluralsight.com/training/players/PSODPlayer?author=dan-wahlin&name=webforms-01&mode=live&clip=0&course=aspdotnet-webforms4-intro to install Microsoft Media Pack by right-click on the Silverlight