A source tells Tom Curran of Comcast Sports New England that the exploratory talks the Patriots had about trading for Chargers wideout Vincent Jackson never heated up at all. A combination of factors kept it from getting serious but, according to a source, the biggest obstacle is Jackson's rap sheet. Jackson's been twice picked up for DUI since 2006. The most recent one, which came in February, resulted in a three-game suspension. According to the source, the Braylon Edwards arrest last month made several teams re-evaluate their interest in Jackson. "They just didn't want the press conference with him up there holding a jersey and everyone asking about all the mistakes he's made and why their team would take that risk," the source explained. Source: Comcast Sports New England