DDJ-1000 selecting random tracks by it self after another track has already loaded and been cued?

Anyone else experienced this? Id loaded a track and irs cue point then turned around for abit turned back round and a completely differnt track had appeared? Also have an issue when loading tracks using the scroller. Once a track is loaded and I go to load another the scroller jumps to the start of the list again, annoying in playlists of 3-400 tracks?

Thanks