Word is that negotiations are still moving slowly. And that could mean Viacom’s in for a lot of pain based on Nielsen data from the first week in which its 17 channels were dark on DirecTV. The black out began on July 11, which means that Viacom networks didn’t have DirecTV’s 20M subscribers for five days in the week that ended July 15. During that week, there was a 27% drop in the total day live viewing for the target audiences of Viacom’s networks compared with the same period last year, according to a compilation of ratings data by Barclays Capital. The previous week the networks collectively were -14%. Those with the steepest year-over-year drops were Nick at Nite (-48.1%), Nickelodeon (-45.0%), VH1 Classic (-35.3%), Nick Toons (-34.8%), and CMT (-32.0%). Viacom’s more resilient channels were VH1 (-1.3%), Teen Nick (-2.5%), Comedy Central (-5.5%), BET (-13.0%), and TVLand (-18.1%).