>> Do you have a Sky box as well? > > No, just a single LNB, fed to two DVB-S cards via a splitter. This is > typical of what I'm seeing in the OSD when switching to an SBS channel: > Signal 84% | S/N 4.5db | BE 2800 | (1__) | No Lock > Sometimes I get a partial lock also. Have you tried taking the splitter and second card out of the equation?