Pop superstar Madonna has angrily hit back at rumours her five-year marriage to Guy Ritchie is in trouble.

The HUNG UP hitmaker, who uncharacteristically cancelled her performance at the NRJ Music Awards in Cannes, France, on Saturday (21JAN06), has been dogged by speculation about her relationship with the 37-year-old director in recent weeks.

The New York Daily News recently claimed, "The couple have split but they're keeping it quiet."

However, the singer's spokeswoman Liz Rosenberg insists their relationship is as strong as ever, revealing Ritchie and children LOURDES and ROCCO last week (ends20JAN06) visited Madonna on the London set of her new video SORRY.

She says, "Guy came on the set to visit. Mr and Mrs Ritchie seemed comfortable and adoring of each other.

"My sense is that they're quite a happy, content couple."