Block Cellphone Spam Text Message

It's really bothering to receive spam text messages on cell phone.  I got four today!
Here is an article telling you how to block spams.
http://pogue.blogs.nytimes.com/2008/06/12/how-to-block-cellphone-spam/
Hope it works.

Modified gnome-shell theme

Gnome-shell theme looks simple and beautiful. It works so far so good.

Canon D420 Printer Issue on Ubuntu 11.04

After  installing Ubuntu 11.04Beta, the  Canon D420 printer driver can't be installed because it depends on gs-esp which is not supported in the new environment. So here is an alternative way to install the driver.
Download the driver from here.
Extract it and go to its RPM foder.
Install alien which allows you to install rpm file on Debian/Ubuntu:

sudo apt-get install alien dpkg-dev debhelper build-essential