I believe the attached patch fixes the problem.
John
--- ui_skinned_playlist.0.c 2009-03-15 14:20:37.000000000 -0400 +++ ui_skinned_playlist.c 2009-03-15 14:31:18.000000000 -0400 @@ -975,13 +975,15 @@ priv->drag_pos = nr; } else if (cfg.show_filepopup_for_tuple) { gint pos = ui_skinned_playlist_get_position(widget, event->x, event->y); - gint cur_pos = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(widget), "popup_position")); - if (pos != cur_pos) { - g_object_set_data(G_OBJECT(widget), "popup_position", GINT_TO_POINTER(pos)); - ui_skinned_playlist_popup_hide(widget); - ui_skinned_playlist_popup_timer_stop(widget); - if (pos != -1) - ui_skinned_playlist_popup_timer_start(widget); + if (pos == -1) { + ui_skinned_playlist_popup_hide (widget); + ui_skinned_playlist_popup_timer_stop (widget); + } else if (! g_object_get_data ((GObject *) widget, "popup_active") || + pos != (int) g_object_get_data ((GObject *) widget, "popup_position")) { + ui_skinned_playlist_popup_hide (widget); + ui_skinned_playlist_popup_timer_stop (widget); + g_object_set_data ((GObject *) widget, "popup_position", (void *) pos); + ui_skinned_playlist_popup_timer_start (widget); } }