Burned popcorn in a popular bar at the UW-Madison Memorial Union brought firefighters to the facility for the second time in two weeks, authorities reported. The fire in the Rathskeller was reported at 2:47 p.m. Saturday, according to a news release from Madison Fire Department spokeswoman Lori Wirth. Staff of the Rathskeller met firefighters in the hallway and led them to the bar, where the popcorn cooker had been on fire before being extinguished by the bar?s general manager.