It's never happened before and there are many reasons why it might have yesterday. I think the most likely cause is dehydration. I know I need to drink more water every day and cut down on the tea consumption.
It amused me greatly to hear the problem described as 'The Bonk' by a friend on Facebook.
No swimming today, I'm expecting a replacement printer from HP whose customer services (thank you Andrew and Michael) have been exemplary in trying to resolve problems caused by a paper jam on Friday in a printer that is less than 6 months old. Two emails of possible solutions that failed on Saturday and Sunday, were followed by a third email on Monday, confirming a replacement printer has been dispatched.
