Can be, but must not be.

But you're right, most likely it's a bug in QT.

On Fri, Sep 19, 2008 at 7:37 PM, Thomas Bächler <> wrote:
Lee MaRS schrieb:

Hi, all

After upgrading to qt 4.4.2-1, I found that some qt4 program became
broken, such as VirtualBox, and Qterm. All of these programs get a
error like this:

process 4272: The last reference on a connection was dropped without
closing the connection. This is a bug in an application. See
dbus_connection_unref() documentation for details.
Most likely, the application was supposed to call
dbus_connection_close(), since this is a private connection.
 D-Bus not built with -rdynamic so unable to print a backtrace

Is it really a bug of application, or just a bug of qt, or just a bug
for this package?

My suspect here is qt. All the talk above comes from dbus, talking about  "an application" doing things wrong. From the programmer of a qt application, dbus should be invisible.