DV UMa rapid fading The eclipsing SU UMa-type dwarf nova, DV UMa, which had been in superoutburst ([vsnet-alert 3791]), is now undergoing a rapid fading phase. In the lightcurve on 20 Dec observed at Kyoto, the 0.3 mag fading for 6 hours and the decrease of superhump amplitude are clearly seen. Follow up observations are strongly encouraged to clarify the nature of this important phase. Regards, Makoto Uemura and Taichi Kato