Problems With STEREO Behind Spacecraft (Updated)
STEREO Behind Spacecraft Experiencing Communication Problems (Updated with NASA Comments)
“Communications with the STEREO Behind spacecraft were interrupted on October 1, immediately after a planned reset of the spacecraft performed as part of a test of solar conjunction operations. The cause of the anomaly is not yet known, though a sensor anomaly in the guidance and control system is suspected. Attempts to recover the spacecraft are continuing.”
Shoot, hope they get this back!