Motorola Mobility CEO Sanjay Jha took time yesterday to talk business strategy, the advantages of Android, and to take developers to task for poorly optimized apps. At several points during the 50-minute chat the topic turned to lackluster battery life, and Jha placed blame squarely at the feet of hastily tested apps -- which he said can sap between 30 and 40 percent of your phone's juice. The chairman even suggested their effect on longevity and performance were the impetus behind 70 percent of handset returns. But, the company has a solution, and (surprisingly) its name is Blur. In a