Beta Theta Pi closed its  SMU chapter on December 10, 2005 for risk management violations and poor academic performance, according to the SMU Daily Campus.
According to the paper's story one  recent incident in particular  caused concern.  In October 2005 police  responded to a fire alarm at the fraternity house.  Apparently a smoke detector  had  activated the alarm.  The smoke, unfortunately for the chapter, was  due to people smoking marijuana.    
http://www.smudailycampus.com/vnews/.../43b4df4762ebd
The chapter does have the right to appeal the  closure through established Beta Theta Pi procedures.