Some University at Buffalo students huddle on the sidewalk this morning in front of a home at 140 Lisbon Ave., where a fire that started on the porch caused $9,000 in damage. The 7:50 a.m. fire was blamed on carelessly discarded charcoal from a barbecue. A second fire was reported at 418 Lisbon three minutes after firefighters responded to the porch blaze. That fire already was out when firefighters arrived at the scene. Its cause is under investigation.