AT&T says it is still investigating what caused one of its access equipment cabinets to explode and catch fire in a suburban Houston neighborhood nearly two weeks ago. According to residents in the 8200 block of Clover Gardens Drive, the explosion shook one nearby house, damaged a fence and some siding, and destroyed several thousand dollars worth of telecom gear, including a DSLAM, installed as part of AT&T's Project Lightspeed. "We're looking into all the possibilities for this fire, including a gas leak, electrical issue, or an act of vandalism," says AT&T spokesman Wes Warnock, in an email response to...