I can attest to this, having visited Putrajaya on many occasions (using public transport) since I came to Malaysia in 2005.In fact I have walked more than once from the Putra Mosque to the Western Transport Terminal (now called Putrajaya Sentral) because it was faster to walk than it was to wait for the bus.
On my most recent visit I attended the Majlis Bajet Consultation 2009 at the Finance Ministry to discuss improvements to the public transport services in Malaysia. After the consultation was over I chose to wait for the bus to get me back to Putrajaya Sentral. I know that it is only through real experience can one discover strengths and weaknesses of public transportation. In the case of Putrajaya, there is a lack of information that is provided to bus users.