In a filing with the FCC dated 9/26/2007, Echostar stated that their satellite launch and redeployment plans are on a temporary hold due to the Proton rocket failure at the ILS launch facility on 9/5/2007.
See here.
... II. UPDATE ON STATUS OF REPLACEMENT SATELLITE FOR ECHOSTAR 3 AND THE HEALTH OF THE ECHOSTAR 3 SATELLITE
EchoStar has not finalized its replacement plans for EchoStar 3 yet. In developing that plan, EchoStar has been faced with two complications. First, a Proton rocket carrying a Japanese spacecraft exploded shortly after takeoff on September 5, 2007. The ongoing investigation of this disaster has made launch windows even more scarce than they previously were and EchoStar has placed new launch plans and the associated redeployment of its satellite fleet temporarily on hold. ...
See here.