[libvirt] Libvirt-Java Binding

Hello, I created a program in Java for communicating with a libvirt/XEN host over SSH. For every update I create a new connection. It just runs about 1 1/2 minutes. I guess it is because I do not close any of these connections. When I tried to close them after having used them (Connect.close()) the program hangs. But after pressing Ctrl+C the program stops and the results are shown. Is that a bug in the libvirt-Java binding? Does anybody else have the same problem with Connect.close()? Thanks, Marcel