Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6cce834 in NL3D::CTessList<NL3D::CTessFarVertex>::remove(NL3D::CTessFarVertex*) () from /usr/lib/libnel3d.so.0
(gdb) thread apply all bt

Thread 8 (Thread 0x7fffe0f23700 (LWP 20219)):
#0  0x00007ffff33d739d in nanosleep () from /lib/libc.so.6
#1  0x00007ffff7ae53f7 in NLMISC::nlSleep(unsigned int) ()
   from /usr/lib/libnelmisc.so.0
#2  0x00007ffff7b378b4 in NLMISC::CTaskManager::run() ()
   from /usr/lib/libnelmisc.so.0
#3  0x00007ffff7a9a355 in ?? () from /usr/lib/libnelmisc.so.0
#4  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#5  0x00007ffff341370d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fffe1724700 (LWP 20218)):
#0  0x00007ffff33d739d in nanosleep () from /lib/libc.so.6
#1  0x00007ffff7ae53f7 in NLMISC::nlSleep(unsigned int) ()
   from /usr/lib/libnelmisc.so.0
#2  0x00000000009cdb13 in CWebigNotificationThread::run() ()
#3  0x00007ffff7a9a355 in ?? () from /usr/lib/libnelmisc.so.0
#4  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#5  0x00007ffff341370d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffe2129700 (LWP 20216)):
#0  0x00007ffff33d739d in nanosleep () from /lib/libc.so.6
#1  0x00007ffff7ae53f7 in NLMISC::nlSleep(unsigned int) ()
   from /usr/lib/libnelmisc.so.0
#2  0x000000000076dc11 in CSessionBrowser::run (this=0x10bdc1d0)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/session_browser.cpp:171
#3  0x00007ffff7a9a355 in ?? () from /usr/lib/libnelmisc.so.0
#4  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#5  0x00007ffff341370d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe692b700 (LWP 20212)):
#0  0x00007ffff3406f93 in poll () from /lib/libc.so.6
#1  0x00007fffe84d441f in ?? () from /usr/lib/libpulse.so.0
#2  0x00007fffe84c3d86 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#3  0x00007fffe84c5809 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#4  0x00007fffe84c58c0 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#5  0x00007fffe84d421b in ?? () from /usr/lib/libpulse.so.0
#6  0x00007fffe7c680e8 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
#7  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#8  0x00007ffff341370d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe9582700 (LWP 20211)):
#0  0x00007ffff33d739d in nanosleep () from /lib/libc.so.6
#1  0x00007ffff340c844 in usleep () from /lib/libc.so.6
#2  0x00007ffff7b346d3 in NLMISC::CCoTask::yield() ()
   from /usr/lib/libnelmisc.so.0
#3  0x00000000008238fe in CLoginStateMachine::waitEvent (this=0x125c100)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/far_tp.cpp:202
#4  0x00000000008286a6 in CLoginStateMachine::run (this=0x125c100)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/far_tp.cpp:503
#5  0x00007ffff7b34bf7 in NLMISC::TCoTaskData::run() ()
   from /usr/lib/libnelmisc.so.0
#6  0x00007ffff7a9a355 in ?? () from /usr/lib/libnelmisc.so.0
#7  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#8  0x00007ffff341370d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffee085700 (LWP 20210)):
#0  0x00007ffff33d739d in nanosleep () from /lib/libc.so.6
#1  0x00007ffff7ae53f7 in NLMISC::nlSleep(unsigned int) ()
   from /usr/lib/libnelmisc.so.0
#2  0x00000000008cfe7e in CLoginProgressTask::run() ()
#3  0x00007ffff7a9a355 in ?? () from /usr/lib/libnelmisc.so.0
#4  0x00007ffff31169ca in start_thread () from /lib/libpthread.so.0
#5  0x00007ffff341370d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fbb740 (LWP 20207)):
#0  0x00007ffff6cce834 in NL3D::CTessList<NL3D::CTessFarVertex>::remove(NL3D::CTessFarVertex*) () from /usr/lib/libnel3d.so.0
#1  0x00007ffff6cca12e in NL3D::CPatch::removeFarVertexFromRenderList(NL3D::CTessFarVertex*) () from /usr/lib/libnel3d.so.0
#2  0x00007ffff6ab1ef1 in NL3D::CTessFace::doMerge() ()
   from /usr/lib/libnel3d.so.0
#3  0x00007ffff6ab23d2 in NL3D::CTessFace::merge() ()
   from /usr/lib/libnel3d.so.0
#4  0x00007ffff6ab2813 in NL3D::CTessFace::updateRefineMerge() ()
   from /usr/lib/libnel3d.so.0
#5  0x00007ffff6d81828 in NL3D::CLandscape::refine(NLMISC::CVector const&) ()
   from /usr/lib/libnel3d.so.0
#6  0x00007ffff6bc5969 in NL3D::CLandscapeModel::clipAndRenderLandscape() ()
   from /usr/lib/libnel3d.so.0
#7  0x00007ffff6e832bc in NL3D::CRenderTrav::renderLandscapes() ()
   from /usr/lib/libnel3d.so.0
#8  0x00007ffff6e8634a in NL3D::CRenderTrav::traverse(NL3D::UScene::TRenderPart, bool) () from /usr/lib/libnel3d.so.0
#9  0x00007ffff6a9bb50 in NL3D::CScene::renderPart(NL3D::UScene::TRenderPart, bool) () from /usr/lib/libnel3d.so.0
#10 0x00007ffff6e99849 in NL3D::CSceneUser::renderPart(NL3D::UScene::TRenderPart) () from /usr/lib/libnel3d.so.0
#11 0x0000000000675957 in renderMainScenePart (
    renderPart=NL3D::UScene::RenderOpaque)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/main_loop.cpp:1026
#12 0x000000000067d653 in renderAll (forceFullDetail=false)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/main_loop.cpp:1201
#13 0x000000000068235f in mainLoop ()
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/main_loop.cpp:2089
#14 0x00000000006c8087 in main (argc=<value optimized out>, 
    argv=<value optimized out>)
    at /build/buildd/ryzom-core-0.8.1628~lucid0/ryzom/client/src/client.cpp:618