An anonymous reader writes "A man awaiting trial in Pennsylvania was arrested by Federal agents on Jan. 4, and accused of exploiting a software 'glitch' within slot machines in order to win payouts. The exploit may have allowed the man to obtain more than a million dollars from casinos in Pennsylvania and Nevada, and officials say they are investigating to see if he used the method elsewhere. The accused stated that 'I'm being arrested federally for winning on a slot machine. Let everybody see the surveillance tapes. I pressed buttons on the machine on the casino. That's all I did.' Apparently, slot machine software errors are fairly common. The lesson here seems to be that casinos can deny you a slot machine win any time they wish by claiming software errors, and if you find an error that you can exploit, you may find yourself facing Federal charges for doing so."