http://bugs.winehq.org/show_bug.cgi?id=23439
--- Comment #7 from Dan Kegel dank@kegel.com 2010-07-18 16:23:04 --- For future reference: I finally found a description of how a normal app can make the entire desktop unresponsive http://www.mail-archive.com/gtk-devel-list@gnome.org/msg12020.html says "If an application hangs with a grab active (say because it’s running over X forwarding and the connection is flaky, or because it’s nm-applet and it ran off to make blocking DBUS calls to populate the menu, or whatever), the entire desktop becomes unresponsive." http://library.gnome.org/devel/gtk-faq/stable/x461.html also mentions this. So a Windows app that calls SetCapture improperly could potentially cause the computer to appear to hang, perhaps.
But the skp0 error message sure sounds like a system problem.