Nauka, the new module for the ISS has had a troubled journey to the ISS after having problems soon after launch necessitating a delay, burning extra fuel and losing the option for a second docking attempt.
However the real drama came hours after the successful docking when thrusters on the module began firing unexpectedly, resulting in a loss of attitude control and emergency actions to stabilize the station.

Lots of credit to Anatoly Zak for a lot of information in this video
http://russianspaceweb.com/

Video showing ISS cameras and telemetry created by:
   / apaiss  
   • Moment Nauka's thrusters fired changi...  

This video also includes a lot of the communications which provided extra clues as to the nature of the problem
   • Emergency onboard Space Station now u...