Visa declined here as well, and I don't have another card to "try" on the side...

I contacted my bank and they'll be looking into it, but no clue when...

@Chen: I take it there's possible improvements to be made on the payment side
Any idea as to what is causing trouble for so many of us ?

There's been talks about the delayed payment being troublesome, but according to my bank, when the payments are authorized, the timeframe is not really taken into account (obviously there might be trouble if it happens years later ).

Edit, 1.5 hour later: it went through, after the bank had to circumvent whatever security they have in place that was blocking the payment in the first place.
Now is a good opportunity to use the term emotional rollercoaster...