Hmm. Can you please try to reproduce this with 0.2.0 (in updates-testing)? 

`yum --enablerepo=updates-testing update midori` as root should do it.

Thanks.

exact same backtrace with 0.2.0:

Program received signal SIGSEGV, Segmentation fault.
JSC::RegExp::match (this=<value optimized out>) at JavaScriptCore/runtime/RegExp.cpp:153
153	                ovector->clear();
Current language:  auto; currently c++
Missing separate debuginfos, use: debuginfo-install GConf2-2.26.2-1.fc11.x86_64 ORBit2-2.14.17-1.fc11.x86_64 PackageKit-gtk-module-0.4.9-1.fc11.x86_64 alsa-lib-1.0.21-3.fc11.x86_64 bug-buddy-2.26.0-2.fc11.x86_64 bzip2-libs-1.0.5-5.fc11.x86_64 dbus-glib-0.80-2.fc11.x86_64 dbus-libs-1.2.12-2.fc11.x86_64 e2fsprogs-libs-1.41.4-12.fc11.x86_64 elfutils-libelf-0.142-1.fc11.x86_64 enchant-1.4.2-5.fc11.x86_64 expat-2.0.1-6.x86_64 gamin-0.1.10-4.fc11.x86_64 geoclue-0.11.1.1-0.6.20090310git3a31d26.fc11.x86_64 gnome-keyring-2.26.3-1.fc11.x86_64 gnutls-2.6.6-3.fc11.x86_64 gstreamer-0.10.25-1.fc11.x86_64 gstreamer-plugins-base-0.10.25-1.fc11.x86_64 gtk-nodoka-engine-0.7.2-5.fc11.x86_64 gvfs-1.2.3-12.fc11.x86_64 hunspell-1.2.8-7.fc11.x86_64 kdenetwork-4.3.2-3.fc11.x86_64 libICE-1.0.4-7.fc11.x86_64 libSM-1.1.0-4.fc11.x86_64 libXau-1.0.4-5.fc11.x86_64 libXcomposite-0.4.0-7.fc11.x86_64 libXcursor-1.1.9-4.fc11.x86_64 libXdamage-1.1.1-6.fc11.x86_64 libXext-1.0.99.1-3.fc11.x86_64 libXfixes-4.0.3-5.fc11.x86_64 libXi-1.2.1-1.fc11.x86_64 libXinerama-1.0.3-4.fc11.x86_64 libXrandr-1.2.99.4-3.fc11.x86_64 libXrender-0.9.4-5.fc11.x86_64 libXt-1.0.5-2.fc11.x86_64 libattr-2.4.43-3.fc11.x86_64 libcanberra-0.12-1.fc11.x86_64 libcanberra-gtk2-0.12-1.fc11.x86_64 libcap-2.16-4.fc11.1.x86_64 libcroco-0.6.2-2.fc11.x86_64 libgcc-4.4.1-2.fc11.x86_64 libgcrypt-1.4.4-6.fc11.x86_64 libgpg-error-1.6-3.x86_64 libgsf-1.14.11-3.fc11.x86_64 libicu-4.0.1-5.fc11.x86_64 libjpeg-6b-45.fc11.x86_64 libnotify-0.4.5-2.fc11.x86_64 libogg-1.1.3-11.fc11.x86_64 libpng-1.2.37-1.fc11.x86_64 libproxy-0.2.3-10.fc11.x86_64 librsvg2-2.26.0-1.fc11.x86_64 libselinux-2.0.80-1.fc11.x86_64 libstdc++-4.4.1-2.fc11.x86_64 libtasn1-1.8-2.fc11.x86_64 libtool-ltdl-2.2.6-11.fc11.1.x86_64 libvorbis-1.2.0-8.fc11.x86_64 libxcb-1.2-4.fc11.x86_64 libxslt-1.1.26-1.fc11.x86_64 nspr-4.8-1.fc11.x86_64 nss-3.12.4-3.fc11.x86_64 pixman-0.14.0-2.fc11.x86_64 qt-4.5.2-3.fc11.x86_64 qt-x11-4.5.2-3.fc11.x86_64 rhythmbox-0.12.3-1.fc11.x86_64 totem-mozplugin-2.26.3-5.fc11.x86_64 totem-pl-parser-2.26.2-2.fc11.x86_64 xulrunner-1.9.1.4-1.fc11.x86_64 zlib-1.2.3-22.fc11.x86_64
(gdb) thread apply all bt full

Thread 1 (Thread 0x7ffff7fb6800 (LWP 21643)):
#0  0x0000003d3b181622 in JSC::RegExp::match (this=<value optimized out>) from /usr/lib64/libwebkit-1.0.so.2
        offsetVectorSize = <value optimized out>
        offsetVector = 0x7fffe44a08c0
        nonReturnedOvector = {<WTFNoncopyable::Noncopyable> = {<No data fields>}, m_ptr = 0x0}
        result = <value optimized out>
#1  0x0000003d3b1816e9 in JSC::RegExpConstructor::performMatch (this=0x7fffe4484b40, r=0x7fffdeb59240, s=@0x7fffffffcb90, startOffset=85, 
    position=@0x7fffe44a08c0, length=@0xf, ovector=0x0) at JavaScriptCore/runtime/RegExpConstructor.cpp:125
        tmpOvector = {<WTFNoncopyable::Noncopyable> = {<No data fields>}, m_ptr = 0x7fffe44a08c0}
#2  0x0000003d3b1dcecd in JSC::RegExpObject::match (this=0x7fffe423e7c0, exec=0x7fffed363390, args=<value optimized out>)
    at JavaScriptCore/runtime/RegExpObject.cpp:147
        position = <value optimized out>
        length = -13248
        regExpConstructor = 0x7fffe4484b40
        input = {m_rep = {m_ptr = 0x7fffe46f3640}, static nullUString = 0x7ffff054f0f8}
        position = <value optimized out>
        length = <value optimized out>
#3  0x0000003d3b1dd059 in JSC::RegExpObject::exec (this=0x7fffe45798f0, exec=0x56, args=@0x55) at JavaScriptCore/runtime/RegExpObject.cpp:117
No locals.
#4  0x0000003d3b1dd12c in JSC::regExpProtoFuncExec(struct JSC::ExecState *, struct JSC::JSObject *, JSC::JSValue, const struct JSC::ArgList &) (
    exec=0x7fffed363390, thisValue={m_ptr = 0x7fffe423e7c0}, args=@0x7fffe44a08c0) at JavaScriptCore/runtime/RegExpPrototype.cpp:70
No locals.
#5  0x00007ffff20452f4 in ?? ()
No symbol table info available.
#6  0x00007fffed363348 in ?? ()
No symbol table info available.
#7  0x0000000000000001 in ?? ()
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
(gdb)

Please take a look at https://bugs.webkit.org/show_bug.cgi?id=26368 since it seems to be the same bug. It's supposed to be already fixed in svn.

I am pursuing the bug listed in comment 3 with upstream in an attempt to identify a patch so that we can get this fixed.

-AdamM

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