Just drop a large number of files (~ > 40) to an application starter and the panel crashes.
Additional information: #0 0x407a805a in _int_malloc () from /lib/i686/libc.so.6 #1 0x407a706c in malloc () from /lib/i686/libc.so.6 #2 0x4056bd67 in g_malloc () from /opt/gnome/lib/libglib-2.0.so.0 #3 0x40579c29 in g_strdup () from /opt/gnome/lib/libglib-2.0.so.0 #4 0x0805aca7 in schedule_exec (cmd=0x40863a20 "", in_terminal=1082538528, use_sn=0, silent=0) at xfce_support.c:973 #5 0x0805ad0b in exec_cmd (cmd=0x40863a20 "", in_terminal=1082538620, use_sn=1082538620) at xfce_support.c:985 #6 0x08052305 in item_drop_cb (widget=0x81d2598, context=0x8343b78, x=76, y=17, data=0x40863a7c, info=2, time=33922734, item=0x81b90c8) at item.c:78 #7 0x40164901 in gtk_propagate_event () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #8 0x403e7e6b in g_closure_invoke () from /opt/gnome/lib/libgobject-2.0.so.0 #9 0x403fa5ce in signal_emit_unlocked_R () from /opt/gnome/lib/libgobject-2.0.so.0 #10 0x403f99ce in g_signal_emit_valist () from /opt/gnome/lib/libgobject-2.0.so.0 #11 0x403f9c0d in g_signal_emit_by_name () from /opt/gnome/lib/libgobject-2.0.so.0 #12 0x40118ea0 in gtk_drag_dest_find_target () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #13 0x40163b35 in gtk_propagate_event () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #14 0x403e7e6b in g_closure_invoke () from /opt/gnome/lib/libgobject-2.0.so.0 #15 0x403fa5ce in signal_emit_unlocked_R () from /opt/gnome/lib/libgobject-2.0.so.0 #16 0x403f99ce in g_signal_emit_valist () from /opt/gnome/lib/libgobject-2.0.so.0 #17 0x403f9c0d in g_signal_emit_by_name () from /opt/gnome/lib/libgobject-2.0.so.0 #18 0x401a2739 in gtk_selection_clear () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #19 0x401a24bd in gtk_selection_clear () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #20 0x401624b2 in gtk_propagate_event () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #21 0x403e8207 in g_type_class_meta_marshal () from /opt/gnome/lib/libgobject-2.0.so.0 #22 0x403e7e6b in g_closure_invoke () from /opt/gnome/lib/libgobject-2.0.so.0 #23 0x403fb17e in signal_emit_unlocked_R () from /opt/gnome/lib/libgobject-2.0.so.0 #24 0x403f9799 in g_signal_emit_valist () from /opt/gnome/lib/libgobject-2.0.so.0 #25 0x403f9b22 in g_signal_emit () from /opt/gnome/lib/libgobject-2.0.so.0 #26 0x40247769 in gtk_widget_send_expose () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #27 0x40161037 in gtk_main_do_event () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #28 0x4031fcf1 in gdk_add_client_message_filter () from /opt/gnome/lib/libgdk-x11-2.0.so.0 #29 0x40566178 in g_main_dispatch () from /opt/gnome/lib/libglib-2.0.so.0 ---Type <return> to continue, or q <return> to quit--- #30 0x405671d8 in g_main_context_dispatch () from /opt/gnome/lib/libglib-2.0.so.0 #31 0x405675d8 in g_main_context_iterate () from /opt/gnome/lib/libglib-2.0.so.0 #32 0x40567c27 in g_main_loop_run () from /opt/gnome/lib/libglib-2.0.so.0 #33 0x4016071f in gtk_main () from /opt/gnome/lib/libgtk-x11-2.0.so.0 #34 0x08055a21 in main (argc=1, argv=0xbffff484) at main.c:303
Fixed in HEAD and xfce_4_0 branches in CVS