Last night my DP Prem acted like it was possessed. The game played normally (from a rules perspective), but the inserts were completely off. When making a battle selection, if you were hovering on Sabretooth, the Mystique light would flash (or hover on Mystique, the Sauron light would flash).
5x was lit at the plunge, but it wasn't active, as a Katana skill shot produced the normal 5M. Some things that should be lit, like the lock insert, wouldn't be, but it would still lock the ball if you hit the shot. The lane inserts didn't switch correctly with flipper taps. And the upper lane gates were not in sync. Another weird one was the playfield X multiplier. I hit Snikt, and instead of 2x lighting, 3x lit (but only 2x scoring was active).
The colored LEDs weren't coordinated either. For example, after hitting a few pops, the ninja lights which are normally blue/purplish were red/pink (but not all of them). In T-Rex, instead of all shots being deep green, some where bluish or yellowish. All battles and quests had color issues.
There were a lot of other quirks, but you see where this is going. I shut the machine down and tried it again. Same results. I'll run the diagnostic tests when I get home today, but has anyone seen this before?