I got taken into hospital by ambulance after collapsing at home in severe pain at about 4am on Sunday morning. After a couple of bouts of intense vomiting, tests and a scan showed a kidney stone was the cause of the problem and I've been given an appointment to have it zapped so I can then pass what's left naturally. At 3pm today they let me go home and I'm just about to crawl into bed and have another sleep. For Mr Sweller's benefit, I have a lower age limit of 19 years old, so some of the nurses were fair game :-)