This bug is hard to deal with. There's similar reports for wnck-applet (Bug #576751). (DockbarX uses wnck as well.) So the problem might be in wnck or gnome-panel.
This bug is hard to deal with. There's similar reports for wnck-applet (Bug #576751). (DockbarX uses wnck as well.) So the problem might be in wnck or gnome-panel.