Comment 2 for bug 188906

I see a similar bug running Apache fop:

fop desktop-course-book.student.fo desktop-course-book.student.pdf
6-Feb-2008 7:47:38 AM org.apache.fop.hyphenation.Hyphenator getHyphenationTree
SEVERE: Couldn't find hyphenation pattern en
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0x42c8e767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0x42c8e8b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0x42bd929d]
#3 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/xawt/libmawt.so [0x42b6a8ce]
#4 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/xawt/libmawt.so [0x42b47067]
#5 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/xawt/libmawt.so [0x42b47318]
#6 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0x42b4761f]
#7 [0x402a8e9d]
#8 [0x402a1edd]
#9 [0x402a1edd]
#10 [0x4029f249]
#11 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/client/libjvm.so [0x621c40d]
#12 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/client/libjvm.so [0x6310378]
#13 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/client/libjvm.so [0x621c2a0]
#14 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x363) [0x6272153]
#15 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0x4027396d]
#16 [0x402a8e9d]
#17 [0x402a1d77]
#18 [0x4029f249]
#19 /usr/lib/jvm/java-6-sun-1.6.0.04/jre/lib/i386/client/libjvm.so [0x621c40d]
java: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
make: *** [desktop-course-book.student.pdf] Aborted (core dumped)
make: *** Deleting file `desktop-course-book.student.pdf'
rm desktop-course-book.student.fo desktop-course-book.normalize.xml