It had been a full five minutes after I poked my head out of the tent when it started to rain. It's not the rampant, anarchic drenching of 2005 but a gentle, constant affair that has the potential to really moisten things up.

But calculating the mud is complex. You must take into account the amount of rain, length of the shower, number of people walking about, ability of the ground to absorb the water, drying capacity of any sunshine and, frankly, whether we care how muddy we get or not. And we don't.

Blame for this weather must surely go to Norweigan folk band Adjagas who started as the first band on the main stage just before the rains and are still on now. Apparently they were set to open the festival in 2005 until the flash flood took out half the site. It must be an omen...