Lindsay Lohan On Best Behavior, but About Her Dad...

Actress scores high praise from judge in her DUI case, while her trouble-prone papa lands himself behind bars

It was a good news-bad news day for the Lohans.

While Lindsay Lohan got a gold star from a Los Angeles judge simply for behaving herself, father Michael had no such luck, spending some quality time behind bars for annoying a former flame.

First, Lindsay. The former Teenage Drama Queen—who just returned from a goodwill mission to India—was MIA this morning in an L.A. courtroom, where the judge told her lawyer, Shawn Chapman Holley, that Lindsay was abiding by the terms of her probation for a 2007 DUI.

One potential snafu to her record getting cleaned: The judge says the 23-year-old must finish an alcohol-education class by July 15, 2010.

Then there's her father...

Papa Lohan was popped Monday in New York on a misdemeanor criminal contempt charge for allegedly violating a restraining order by attempting to call former fiancée Erin Muller, according to a spokesman for the Suffolk County Police Department.

Muller had taken out the order against the 49-year-old family patriarch back in March after he supposedly threatened to kill her. Lohan, who has pleaded not guilty to a misdemeanor charge of aggravated harassment, has been released on bail.

He tells E! News that he plans to present authorities with evidence exonerating him from the "false accusations."

"I wish Erin the best," he adds, "and hope she finds whatever it is she is looking for."

—Reporting by Ashley Fultz and Claudia Rosenbaum