from www.tmz.com – Lindsay Lohan has a long-term career problem in the wake of her two failed drug tests — the judge in the case could derail her comeback.

Lindsay is now relying on Judge Elden Fox to allow her to leave California to shoot “Inferno” in Louisiana and possibly fly to New York City for “Saturday Night Live.”

Here’s the problem. Sources connected with the case have been telling TMZ … if Lindsay were to fail a drug test the judge would probably pull the plug on out-of-state-travel — a privilege for Lindsay, not a right.

TMZ broke the story that Lindsay failed two tests … one for cocaine last week.

The judge has been pretty gracious, allowing Lindsay to visit NYC to see her family last weekend. But all bets are off now that Lindsay has flunked two tests.

And sources close to Lindsay somehow already know the big wigs on “Inferno” are pissed that she may have screwed up again, so flying to Louisiana may be a moot question.

As for future projects … good luck getting insurance for a Lindsay Lohan flick.

Back story: Lindsay Lohan took to her Twitter page late Friday night to talk about her recent failed drug tests.

Regrettably, I did in fact fail my most recent drug test and if I am asked, hat I am prepared to appear before judge Fox next week as a result.

Substance abuse is a disease, which unfortunately doesn’t go away over night. I am working hard to overcome it and am taking positive steps forward every day. I am testing every single day and doing what I must do to prevent any mishaps in the future.

This was certainly a setback for me but I am taking responsibility for my actions and I’m prepared to face the consequences.

I am so thankful for the support of my fans, loved ones and immediate family, who understand that i am trying hard, but also that I am a work in progress, just as anyone else. I am keeping my faith, and I am hopeful….Thank you all!!!