Am I the only one experiencing some hiccup issue at around 30 second of each mix?  It's like a frame hiccup and it make me lose a beat nearly each time.  I guess I'm not alone but how many people experience that? 
 

i've got it a few times, like once or twice, but not nearly as often as you are making it sound.  

it might be a badly printed disc... i would take it back just to be sure