"Law Offices of Howard G. Smith announces that it is investigating potential claims against the board of directors of Arbinet Corporation (“Arbinet”) (NASDAQ:ARBX) related to the Company’s agreement to be acquired by Primus Telecommunications Group Incorporated (“Primus”) in a proposed stock for stock transaction."... "The investigation concerns possible breaches of fiduciary duty and other violations of law related to approval of the proposed transaction by Arbinet’s board of directors."