Another warrant, another court hearing for Lindsay Lohan. Lohan has been ordered to appear at a hearing Friday after a judge issued an arrest warrant for failing a drug test less than a month after she was released from inpatient rehab. Superior Court Judge Elden Fox revoked Lohan's probation in her three-year-old drug case Monday and issued a bench warrant which was immediately stayed, allowing her to remain free until the hearing to determine if she violated her probation. Previously, Fox had threatened the actress with 30 days in jail for each violation. He must now decide whether to send her back to jail or into treatment. Lohan confirmed on her Twitter page last week that she failed the court-ordered drug and alcohol screening. “Regrettably, I did in fact fail my most recent drug test,” she tweeted. She also said, “substance abuse is a disease, which unfortunately doesn't go away over night. I am working hard to overcome it.”