crash with dpf plugins

Thread 4 (Thread 0xac28bb40 (LWP 7425)):
#0  0xb7fd9ce5 in __kernel_vsyscall ()
#1  0xb78fbaa7 in syscall () at ../sysdeps/unix/sysv/linux/i386/syscall.S:29
#2  0xb7dd41f1 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#3  0xb7dae490 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#4  0xb7db1464 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#5  0xb7dad45b in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#6  0xb7dacb85 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#7  0xb7dd1908 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#8  0xb771f295 in start_thread (arg=0xac28bb40) at pthread_create.c:333
#9  0xb790005e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 3 (Thread 0xb72e8b40 (LWP 7419)):
#0  0xb7fd9ce5 in __kernel_vsyscall ()
#1  0xb78eeb3f in read () at ../sysdeps/unix/syscall-template.S:84
#2  0xb7dd3437 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#3  0xb7dd7acd in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#4  0xb7dd1908 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#5  0xb771f295 in start_thread (arg=0xb72e8b40) at pthread_create.c:333
#6  0xb790005e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 2 (Thread 0xb7369b40 (LWP 7418)):
#0  0xb7fd9ce5 in __kernel_vsyscall ()
#1  0xb7724a6c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S:187
#2  0xb790c7bd in __pthread_cond_wait (cond=0x829b36c, mutex=0x829b350) at forward.c:149
#3  0xb7dd295a in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#4  0xb7dc4f69 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#5  0xb7dd1908 in ?? () from /usr/lib/i386-linux-gnu/libjack.so.0
#6  0xb771f295 in start_thread (arg=0xb7369b40) at pthread_create.c:333
#7  0xb790005e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 1 (Thread 0xb736b7c0 (LWP 7413)):
#0  0xb7256257 in ?? ()
#1  0xb0228e7c in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#2  0xb02293df in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#3  0xb013f599 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#4  0xb0137cd3 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#5  0xb01382a7 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#6  0xb0368479 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#7  0xb036a422 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#8  0xb017e756 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#9  0xb0369ddf in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#10 0xb0183666 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#11 0xb035db61 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#12 0xb035f829 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#13 0xb00f24c9 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#14 0xb00f3065 in ?? () from /usr/lib/i386-linux-gnu/dri/r300_dri.so
#15 0xb7f88595 in ?? () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
#16 0xb7f8898e in ?? () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
#17 0xb7f5ddc7 in glXSwapBuffers () from /usr/lib/i386-linux-gnu/mesa/libGL.so.1
#18 0x0808a318 in puglLeaveContext (view=0x829ccb0, flush=true) at src/pugl/pugl_x11.c:225
#19 0x0808a95d in puglDisplay (view=0x829ccb0) at src/pugl/pugl_x11.c:379
#20 0x0808b327 in puglProcessEvents (view=0x829ccb0) at src/pugl/pugl_x11.c:600
#21 0x0808dad7 in DGL::Window::PrivateData::idle (this=0x829cc68) at src/Window.cpp:639
#22 0x0808bce2 in DGL::Window::_idle (this=0xbffff0c0) at src/Window.cpp:1236
#23 0x0806a5ed in DGL::Application::idle (this=0xbffff0b4) at src/Application.cpp:37
#24 0x0806a6c6 in DGL::Application::exec (this=0xbffff0b4) at src/Application.cpp:51
#25 0x0805aaf7 in DISTRHO::UIExporter::exec (this=0xbffff0b4, cb=0xbffff0a4) at ../../dpf/distrho/src/DistrhoUIInternal.hpp:343
#26 0x0805b131 in DISTRHO::PluginJack::PluginJack (this=0xbffff0a4, client=0x829b488) at ../../dpf/distrho/src/DistrhoPluginJack.cpp:181
#27 0x0805927c in main () at ../../dpf/distrho/src/DistrhoPluginJack.cpp:588
quit