I noticed today that the north simulcast of the NJSP trunked system, at least on my scanners, was acting up. The frequency 858.4625 was used almost every time. I specifically noticed that the talkgroups 35792 "B2-05 5 comm", and 36304 "B2-22 CIB2" were switching places. I also heard some things that definatly did not sound like NJSP ops. I have tried listening on more than one scanner and its was happening on both. Does anyone have any ideas?