YES
+1
Have had this myself with my DDJ-SX2. It was with SYNC enabled and during some scratching, somehow it thought the master deck tempo was set to 0. Very frustrating. I had to quickly change master deck move my fader all the way up (to 0%) and then back to middle (100% pitch).
I haven't had this recently, but I also haven't been using sync recently too. Not sure if Pioneer is looking at this..