According to British newspaper the DAILY MIRROR, Frost - who divorced ROAD TO PERDITION star Law six months ago - turned up drunk at the actor's north London pad late at night with her current beau Jackson Scott and demanded to speak with him.
The pair are currently battling for custody of their three children, RAFFERTY, seven, IRIS, three and one-year-old RUDY.
A source reveals, "It was one of the ugliest arguments they've had for ages.
"Sadie feels very embarrassed by the whole thing, but as far as she is concerned it would never have happened if Jude had let her in.
"She was screaming and shouting at him and even Jackson was chipping in.
"Their arguments always seem to revolve around their kids. They are both doting parents who want to spend as much time with the children as possible. Naturally, this causes a lot of friction.
"But like all her arguments with Jude, when Sadie calmed down, everything got back to normal and they were just like old mates again."
Law's lawyer confirms, "An argument did take place on the steps of Jude's home. But it has now been resolved and everything is working out smoothly."
It's not the first time, the pair's split has caused tension. Last June (03) the police were called to London house they shared to investigate a violent argument.22/04/2004 02:55