Dragging out seems to be the norm. Started the process in Nov. 2009, took 5 months to even serve STBXW, so hang in there.
By the way, you probably should stop paying on his student loans. Unless, directed by a court order, that is his debt, his problem. (I know that is easier said than done and I have issue with that at times, but it is a matter of facing reality of the situation).