KHLOE AND LAMAR ODOM'S MARRIAGE IN TROUBLE, NOT OVER CHEATING SCANDAL, BUT LAMAR'S ADDICTION TO CRACK COCAINE

TMZ has revealed that Khloe Kardashian has kicked her husband of 4 years, Lamar Odom, not because of all the cheating scandals that trails Lamar, but over Lamar's addiction to crack cocaine;

Lamar Odom has been deep into crack cocaine for at least 2 years ... TMZ has learned. TMZ broke the story ... Lamar has gone off the rails with drug use ... which is the principal cause of the crisis in his marriage to Khloe Kardashian.  As we reported Lamar went to a rehab facility a year ago this month and stayed for 3 weeks before bailing -- and we're told the problem was crack.

Sources say Lamar's crack use was extreme before he went to rehab, but he cleaned up his act during the basketball season that just ended.  Sources say shortly after he hung up his jersey, he started again with a bang. As we reported ... Khloe threw Lamar out of the house a few days ago after he rejected an attempt at an intervention. It's unclear how Lamar's problem will affect his basketball career. We made calls to Lamar's reps.  So far, no comment."

According to TMZ, within the last 2 days, the entire family staged an intervention, trying to convince Lamar to go back to rehab, but he wouldn't have any of it. So, Khloe kicked him out of the house. See the photos of Lamar leaving with his bags after the cut...

One of Lamar's friends loading the car with his bags.