This has also been affecting customers of Ulster Bank in Ireland. The biggest problem appears to be catching up on the backlog of transactions:

"The bank processed more than 110,000 transactions with a value of €500 million over the weekend" - http://www.irishtimes.com/newspaper/breaking/2012/0625/break...

Does anyone else think that 110,000 transactions shouldn't take a whole weekend? Of course, we don't know exactly what a transaction involves but I would have expected this to take only a few hours at most. But, of course, I'm assuming modern hardware. It seems as if they just don't have the spare capacity to catch-up after an outage like this.

I wonder if this will make the conservative bank IT departments even more conservative or will they go in the opposite direction and realise the benefits of modern technology (performance, scalability and a pool of knowledgeable talent)?