For my last couple of visits to my usual store, the register keeps freezing after the second card is scanned. Here's what happens. First card is scanned, the $500 value pops up on the screen, then the $3.95 activation fee pops up. Then the cashier scans the second card. Then scans my ID. the $500 value pops up. But before the $3.95 activation fee on the second card comes up, the whole system freezes. Anyone else encounter this?

This is for purchases of PPMC cards. Haven't tried any other types of cards.