hello. I'm Polish. Sorry for the spelling of English. I have this problem. so last night my xDj R1 (mixer) hung. fader and potentiometer on the mixer is suspended, and the sound was heavily distorted. This has happened when I played from CD or USB. I had to turn off xDj and then again turn on the mixer because he did not react at all ... And it was always sudden. Once the night ok and sometimes out of nowhere mixer to crash ... This has happened in various clubs ... The software 1.07 was also the problem ... Why CDJ 350 does not have such a problem? Why CDJ 350 reads discs faster? Why xDj is unstable? I bought the 4000 PLN equipment is not suitable for work ... If I bought an older CDJ 350 it could work without a problem ...