The same thing was happening to me this morning when I was revenge-pwning Affluence Anonymous. On the next hit, the meter goes down to where it should be. Very confusing at first, as it was early, and I wasn’t really looking at the numbers — just seeing the meter go way up, almost to complete pwnage, after my first hit, then way down after the second hit.

EDIT: Today was also my first day with the DML. I’m seeing a theme emerge here…