A dump truck driver has been charged with four counts of manslaughter for crashing into a group of motorcycles who were stopped for a red light in northern Phoenix. http://www.nytimes.com/aponline/2010/04/06/us/AP-US-Motorcycle-Crash.html?_r=1&ref=aponline Michael Jakscht, 46, of Scottsdale, Ariz., was arrested Tuesday on…