CMG Problems on ISS?

NASA Space Station On-Orbit Status 23 June 2006

“Yesterday, CMG-3 (Control Moment Gyroscope 3) exhibited offnominal signatures in SMCC (Spin Motor Commanded Current) and vibrations, first appearing coincidental with the SSRMS (Space Station Remote Maneuvering System) checkout. They stabilized and returned to normal values after ~5.5 hours. [Such elevated SMCCs and vibrations have been seen before during Robotics ops, but their long persistence is clearly unusual.]”