Royal Bank of Scotland has apologised to its two million mobile banking subcribers after a glitch shut down the bank's app for the second time in as many months on Friday.
Customers turned to Twitter to express their frustration at the flaky service after being locked out of their accounts for two-and-a-half hours before normal service was resumed.
A similar problem occurred at the end of March, shortly after the bank had reported impressive growth in its mobile channel - with the number of active users doubling from one million to two million by end-2012. RBS says its mobile users log in on average six times per week, compared to twice a week online.
Today's breakdown is doubly embarrassing for the bank, coming a week after it announced plans to cut over 1400 jobs in retail support and invest more money in its mobile and online operations.