MADONNA is more gung-ho to take in Third World urchins than her husband, Guy Ritchie. Now that she's gearing up to adopt a baby girl from Malawi, where she acquired baby David earlier this year, it's putting a strain on their six-year marriage. "They've had a difficult time. [David] is beautiful and Guy is very good with him. But I don't think he'd want to adopt again," Guy's dad, John Ritchie, told London's Daily Mail. The dispute came to light two weeks ago when the couple squabbled during dinner at Cecconi's. The Mail reports, "Diners overheard Ritchie attacking the singer for being 'so controlling' while she appeared troubled as she played with her food."