This.
MU pretty much got destroyed by DM2. Prior to it, it was going VERY strong and then just got obliterated on Wed. Thurs, it was one of the movies that dropped, although that may have more to do with it being an animated flick than DM2. At this point, MU fans can only hope that it stabilizes and continues to have similar or better drops prior to DM2's release, but with much smaller numbers.
Damn it, I was really hoping for 300m for this one. I love the Monsters characters. Not a fan of the DM world, although the minions are pretty damn funny and cute, but Gru and company just don't do it for me at all.