BAD: LiLo's Ex Charged With DUI... at 10:30am!

Bad: Getting arrested on suspicion of DUI. Worse: Getting arrested on suspicion of DUI at 10:30 in the morning. That's what happened yesterday to Samantha Ronson, DJ and Lindsay Lohan ex extraordinaire. Ronson was pulled over on her way home from Las Vegas, where she DJed Sunday night, when cops spotted her speeding in her black Porsche at 10:30am. 

Sources tell TMZ she didn't do well on her field sobriety test, then refused to take a breathalyzer and was arrested. At the station, she allegedly was found to be over the legal limit. Radar notes that she was released from jail last night.