According to The Hollywood Reporter, shares of Blockbuster Inc. fell more than 6% on Tuesday after the video rental giant warned that second-quarter results were hurt by weak rental business trends. In a brief statement that was the latest sign the broader film business is facing challenges, Blockbuster said chairman and CEO John Antioco had told holders of his firm's bank debt during a presentation Tuesday that the weak momentum also casts a shadow over the rest of the year. "Overall industry decline and continued poor theatrical performance had a negative impact on the second quarter and has created uncertainty about the balance of the year," the statement quoted Antioco as saying.