Hundreds of reports on Twitter from many parts of the country indicate that Electronics Benefits Transfer (EBT) cards (the electronic version of food stamps) are not working this afternoon.

Some Twitter users are blaming the government shutdown:

Actually, it probably is a coincidence. According to CBS, the problems can be traced to a glitch in a computer system upgrade. The federal EBT website has been shut down, however, and people calling the customer service line were told to try again later in the day.

Nevertheless, if the problem is not fixed soon, things could get ugly.