So, it seems promoters of that recent Madonna Wembley show have been fined £135,000 after a late start meant the concert broke the venue's 10.30pm curfew.
It was originally thought the late finish, which breaks Wembley rules, would result in a fine - similar to that given to promoters of a George Michael concert last year - but the day after the gig Madge's people denied the finishing time was contractual. But new reports suggest that in fact it was, and that the singer's promoters will now have to cover the cost of the fine.
It's not clear why Madonna went on stage so late. The curfew rule exists so that the local tube network has time to cope with the 90,000 concert-goers rushing out of the venue before it shuts down for the night just after midnight.
As previously reported, some gig-goers said their biggest gripe on the night wasn't the late start but the poor sound quality, although Madge's people denied there were any technical problems. Then again, they did also deny there'd be a fine.