A year 2010 bug has rendered approximately 30 million German debit and credit cards unusable.

"Multiple news agencies said the outage stemmed from card chips that couldn't recognize the year 2010," writes The Register's Dan Goodin. "The DSGV, an association representing German banks, said engineers were working diligently to fix the problem, but a full resolution might not come until Monday."

"The German payment card snafu hit a variety of banks, although customers of Deutsche Bank reportedly were not affected," Goodin writes.

Click here to read the story at The Register.