http://bugs.winehq.org/show_bug.cgi?id=16123
--- Comment #1 from Stefan Dösinger stefandoesinger@gmx.at 2008-11-19 10:40:09 --- Office runs some quickstart systray apps, and other things like indexing services I think. Are you sure that there is no office process intentionally running?
What I mean is: If Office intentionally keeps something running(which I think it does), then this is not Wine's fault.