my case status shows post dicision acitivity ,my visa type I 130

my case status show post decision activity from last 6month,?

my husband work here as a public heath inspector officer ,in NY mental heath and hygiene dept. he is green card holder for 3years. he applied for last February 2011.i am from i want to know ,how long time i should wait and how long time will need for my processing time?what should i do next?