Hi John,
I think personally that when the WLAN is set to auto , it picks up other wi-fi signals on the unit causing confusion in the software,
I have had issues ranging from song's stopping for no reason, the cue changing from cd mode to vinyl mode mid set, the whole unit crashed once
during a gig, causing everything to freeze, the BPM tempo alters on its own sometimes as well.
Now I have changed the WLAN setting, I have played a 2 hour set in my room every day for a week without any problems at all.