I interviewed there to and haven't heard anything. I think it's OK to call to check your status now. I mean, you paid your dues, travelled there, and all that; you deserve to know where you stand. I haven't called b/c I already got acceptance to another school closer to me. I did call my top choice this morning though to ensure all my stuff was in order (I never got the interview invitation). They were polite and understanding. Good luck.