With ORBit from CVS today I got a crash while running under valgrind:

==31116== Invalid read of size 4
==31116==    at 0x1C0810A1: ORBit_adaptor_find (orbit-adaptor.c:164)
==31116==    by 0x1C081200: ORBit_handle_request (orbit-adaptor.c:221)
==31116==    by 0x1C06CBC4: giop_connection_handle_input (giop-recv-buffer.c:1282)
==31116==    by 0x1C086DAA: link_connection_io_handler (linc-connection.c:1280)
==31116==    by 0x1C088683: link_source_dispatch (linc-source.c:53)
==31116==    by 0x1C15C0DF: g_main_context_dispatch (gmain.c:1942)
==31116==    by 0x1C15DB0C: g_main_context_iterate (gmain.c:2573)
==31116==    by 0x1C15DF61: g_main_context_iteration (gmain.c:2632)
==31116==    by 0x1C084CDC: link_main_iteration (linc.c:232)
==31116==    by 0x1C06C03F: giop_recv_buffer_get (giop-recv-buffer.c:718)
==31116==    by 0x1C06F48C: ORBit_small_invoke_stub (orbit-small.c:657)
==31116==    by 0x1C06F61B: ORBit_small_invoke_stub_n (orbit-small.c:575)
==31116==    by 0x1C0800AC: ORBit_c_stub_invoke (poa.c:2640)
==31116==    by 0x1BBB5B14: Bonobo_ActivationContext_query
(Bonobo_ActivationContext-stubs.c:140)
==31116==    by 0x1BBB74B5: bonobo_activation_query
(bonobo-activation-activate.c:290)
==31116==    by 0x807FAD1: panel_applet_frame_cnx_broken (panel-applet-frame.c:831)
==31116==    by 0x1C08586C: link_connection_emit_broken (linc-connection.c:141)
==31116==    by 0x1C085A5E: dispatch_callbacks_drop_lock (linc-connection.c:230)
==31116==    by 0x1C085BCD: link_connection_state_changed_T_R
(linc-connection.c:308)
==31116==    by 0x1C0861DC: link_connection_state_changed (linc-connection.c:702)
==31116==  Address 0x18 is not stack'd, malloc'd or (recently) free'd
==31116== discard syms at 0x1B9C0000-0x1B9C3000 in /usr/lib/gconv/ISO8859-1.so
due to munmap()