Invalid read of size 1

Running current precise with the first SRU candidate from unity staging I see those errors in valgrind:

==4260== Invalid read of size 1
==4260== at 0x402C28C: index (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==4260== by 0x53F0758: valueChanged (string2.h:1227)
==4260== by 0x56E04E7: notify_listeners_callback (gconf-client.c:2810)
==4260== by 0x56D65AE: gconf_listeners_notify (gconf-listeners.c:590)
==4260== by 0x56E3CB6: notify_one_entry (gconf-client.c:2835)
==4260== by 0x56E3D96: notify_idle_callback (gconf-client.c:2875)
==4260== by 0x45F673F: g_idle_dispatch (gmain.c:4634)
==4260== by 0x45F8CD9: g_main_context_dispatch (gmain.c:2515)
==4260== by 0x45F90E4: g_main_context_iterate.isra.21 (gmain.c:3123)
==4260== by 0x45F91C0: g_main_context_iteration (gmain.c:3184)
==4260== by 0x53F12EB: processEvents (gconf.c:1918)
==4260== by 0x542C7DE: ccsProcessEvents (main.c:2037)
==4260== by 0x403B34A: CcpScreen::timeout() (in /usr/lib/compiz/libccp.so)
==4260== by 0x403B620: boost::detail::function::function_obj_invoker0<boost::_bi::bind_t<bool, boost::_mfi::mf0<bool, CcpScreen>, boost::_bi::list1<boost::_bi::value<CcpScreen*> > >, bool>::invoke(boost::detail::function::function_buffer&) (in /usr/lib/compiz/libccp.so)
==4260== by 0x40D2412: CompTimer::triggerCallback() (function_template.hpp:1013)
==4260== by 0x40D2520: CompTimeoutSource::callback() (timer.cpp:150)
==4260== by 0x40D2631: sigc::internal::slot_call0<sigc::bound_mem_functor0<bool, CompTimeoutSource>, bool>::call_it(sigc::internal::slot_rep*) (mem_fun.h:1787)
==4260== by 0x40D17AE: CompTimeoutSource::dispatch(sigc::slot_base*) (slot.h:440)
==4260== by 0x4586470: Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) (main.cc:956)
==4260== by 0x45F8CD9: g_main_context_dispatch (gmain.c:2515)
==4260== by 0x45F90E4: g_main_context_iterate.isra.21 (gmain.c:3123)
==4260== by 0x45F952A: g_main_loop_run (gmain.c:3317)
==4260== by 0x42264D2: (below main) (libc-start.c:226)
==4260== Address 0x6fc5b5f is 0 bytes after a block of size 15 alloc'd
==4260== at 0x402BE68: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==4260== by 0x45FE96A: standard_malloc (gmem.c:85)
==4260== by 0x45FEE02: g_malloc (gmem.c:159)
==4260== by 0x4614B8A: g_strdup (gstrfuncs.c:356)
==4260== by 0x56DCF95: gconf_entry_new (gconf-value.c:1482)
==4260== by 0x56DCFFE: gconf_entry_copy (gconf-value.c:1548)
==4260== by 0x56DF077: gconf_client_cache (gconf-client.c:2339)
==4260== by 0x56E085A: notify_from_server_callback (gconf-client.c:424)
==4260== by 0x56E5959: gconf_dbus_message_filter (gconf-dbus.c:690)
==4260== by 0x5884440: dbus_connection_dispatch (dbus-connection.c:4603)
==4260== by 0x58579AC: ??? (in /usr/lib/i386-linux-gnu/libdbus-glib-1.so.2.2.2)
==4260== by 0x45F8CD9: g_main_context_dispatch (gmain.c:2515)
==4260== by 0x45F90E4: g_main_context_iterate.isra.21 (gmain.c:3123)
==4260== by 0x45F91C0: g_main_context_iteration (gmain.c:3184)
==4260== by 0x53F12EB: processEvents (gconf.c:1918)
==4260== by 0x542C7DE: ccsProcessEvents (main.c:2037)
==4260== by 0x403B34A: CcpScreen::timeout() (in /usr/lib/compiz/libccp.so)
==4260== by 0x403B620: boost::detail::function::function_obj_invoker0<boost::_bi::bind_t<bool, boost::_mfi::mf0<bool, CcpScreen>, boost::_bi::list1<boost::_bi::value<CcpScreen*> > >, bool>::invoke(boost::detail::function::function_buffer&) (in /usr/lib/compiz/libccp.so)
==4260== by 0x40D2412: CompTimer::triggerCallback() (function_template.hpp:1013)
==4260== by 0x40D2520: CompTimeoutSource::callback() (timer.cpp:150)
==4260== by 0x40D2631: sigc::internal::slot_call0<sigc::bound_mem_functor0<bool, CompTimeoutSource>, bool>::call_it(sigc::internal::slot_rep*) (mem_fun.h:1787)
==4260== by 0x40D17AE: CompTimeoutSource::dispatch(sigc::slot_base*) (slot.h:440)
==4260== by 0x4586470: Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) (main.cc:956)
==4260== by 0x45F8CD9: g_main_context_dispatch (gmain.c:2515)
==4260== by 0x45F90E4: g_main_context_iterate.isra.21 (gmain.c:3123)
==4260== by 0x45F952A: g_main_loop_run (gmain.c:3317)
==4260== by 0x42264D2: (below main) (libc-start.c:226)