casual crash on www.wetteronline.de

[cryptofor]

while surfing on www.wetteronline.de/wetter/berlin (or other city) midori sometimes crashes, consuming 100% CPU time without reaction. midori crahes every time surfing first at ixquick.de on one tab and on www.wetteronline.de/wetter/berlin on second tab. Then I stop midori with SIGTERM from top, midori prints on screen :

Launching command: '/usr/bin/gdb' --batch -ex 'set print thread-events off' -ex run -ex 'set logging on /run/user/1000/midori/gdb.bt' -ex 'bt' --return-child-result --args midori
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".

Program received signal SIGTERM, Terminated.
0xaa01f50c in ?? ()
#0 0xaa01f50c in ?? ()
#1 0xaabe1204 in ?? ()
#2 0xa7da2116 in ?? ()
#3 0xb4bb3a42 in ?? () from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-1.0.so.0
#4 0xb4b567d8 in JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*, JSC::Register*) () from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-1.0.so.0
#5 0xb4b34c1c in JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) () from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-1.0.so.0
#6 0xb4c5ce30 in JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) () from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-1.0.so.0
#7 0xb4c56518 in ?? () from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-1.0.so.0
#8 0xaaeb940f in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

about:version:

Command line /usr/bin/midori
Midori 0.5.11 ((null)) Midori
GTK+ 2.24.29 (2.24.29) Glib 2.46.2 (2.46.2)
WebKitGTK+ 2.4.9 (2.4.9) libSoup 2.52.2
cairo 1.14.4 (1.14.6) libnotify No
gcr 3.18.0 granite No
Platform X11; Linux i686
Identification Mozilla/5.0 (X11; Linux) AppleWebKit/538.15 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/538.15 Midori/0.5
Video Formats H264 [x] Ogg Theora [x] WebM [x]