(EDIT: Original post questioned if the following was a software bug or feature
My ACDC PREM never used to do this, but now it does (after installing PREM/LE V1.6):
During gameplay, the Cannon button inexplicably becomes lit (IE., while the ball is up above the pops in the lanes)...you then press the lit Cannon button, and you're awarded a jackpot of 250,000...anyone else see this yet?