Here is where I saw it:
"However, the contract Starz has with Sony has a subscriber cap with regard to Netflix. The home entertainment company now has more than 23.5 million subscribers, which exceeds the cap. Starz pulled the movies from Netflix so it wasn't in jeopardy of violating its deal with Sony."
http://latimesblogs.latimes.com/entertainmentnewsbuzz/2011/0...