Dang … and just when we thought that she was behaving herself. TMZ is reporting that Lindsay Lohan, who has only been out of jail/rehab for a few weeks, has failed one of her court-ordered drug tests (UPDATE: TMZ has discovered that L. Lo actually failed TWO of her recent drug tests). According to the terms of her probation, Lindsay may be forced back into jail for 30 days for failing the test!

Lindsay Lohan has failed a drug test in her criminal case … TMZ has learned. We’re told the court-mandated drug test in question occurred last week. According to the terms of Lindsay’s probation, she will get 30 days in jail for a positive drug test. One source connected with Lindsay tells TMZ … “People with addiction problems don’t get better magically, and she’s really been making an effort to make herself better.” And D.A. spokesperson Sandi Gibbons tells TMZ her office has not been “officially notified” of the test results and no court date has been set yet.

Yikes! If in fact Larry Rudolph is Lindsay‘s new manager, he’s really got his work cut out for him. You know, I had a bad feeling when started seeing Lindsay Lohan going out every single day since she was released from rehab … it just seemed like a bad idea for her to be in places with temptation when she very clearly has an addiction problem. I mean, it was only a few weeks ago that we saw her out at a club with various alcoholic beverages laid out in front of her on the table. Am I surprised that she failed her drug test? Sadly, not at all. Now we will wait and see if it’s back to the slammer for L. Lo.

UPDATE: Lindsay Lohan herself is commenting on this report from TMZ, she tells US Weekly magazine that the claim that she failed a drug test is “nuts”. After the jump, find out what she has to say about this latest controversy …

“I’m fine.” Of TMZ’s report? “They’re all nuts,” she claims. Similarly, Lohan’s attorney Ed MacPherson told Us he’s still investigating the supposed test: “I have no idea at this point whether or not there is any merit to this.” Indeed, no authorities could confirm the report. L.A. County Sheriff’s Department spokesperson Steve Whitmore tells Us, “I haven’t been officially notified by anyone” about a failed Lohan drug test or the star’s return to prison. Kathy Roberts of L.A. Superior court also said, “nothing has been filed or anything entered into the court calendar. We can’t confirm [the report].”

HMMM … who do YOU believe? Is TMZ right? Did Lindsay really fail a drug test? Is Lindsay right? Is she really “totally fine”? I suppose we’ll find out soon enough … it’s sad but despite the fact that I want to give L. Lo the benefit of the doubt, I’m not sure I believe her. What do y’all think?

UPDATE 2: TMZ has updated their original report with an update that reveals that, according to their sources, L. Lo tested positive for cocaine:

Lindsay Lohan tested positive for cocaine last week and that is why she failed her drug test … sources tell TMZ. As we first reported, Lindsay failed the court-mandated drug test — and according to the terms of her probation, she will go back to jail for 30 days as a result. Sources close to Lindsay say she’s been telling friends she’s “getting her life together.” However, we’re also told, she’s surrounded herself with some “bad influences.”

HMMMMMMMMMM. To be honest, I think TMZ has more credibility here … stay tuned …

[Photo credit: X17; Source, Source, Source]