Forms leaves java.exe hanging when closing Forms

I'm running Forms 11g, IE9, Java 7 update 21

I am having trouble with java.exe processes remain hanging after closing Forms. If I have an an IE Browser window open with two tabs and then open two Forms sessions, which creates two java.exe processes. I then close both Forms sessions, and it leaves one java.exe hanging. If I then close the two IE Browser windows, it removes the java.exe process. I can replicate this consistently. It is working correctly as long as I do not have any other IE Browser windows open at the time that I open Forms.