Not that I'm really surprised... But both People Magazine and TMZ are reporting that singer Whitney Houston is back in rehab.

Maybe third time will be the charm?

You may remember that it was back in January of 2000 when we first heard allegations that her, and then hubby Bobby Brown, were doing drugs.

And don't forget about her quote to Diane Sawyer back in 2002 where Houston said, "We don't do crack. We don't do that. Crack is wack."

But then she checked herself in... Twice... Once in 2004 and again in 2005.

A rep for Houston is confirming that she is "currently in an out-patient rehab program for drug and alcohol treatment. Whitney voluntarily entered the program to support her long-standing recovery process.”

Sources are telling TMZ that she checked in about 10 days ago.