Application: konqueror (4.4.5 (KDE 4.4.5))
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.3
Operating System: Linux 2.6.32-5-amd64 x86_64
Distribution: Debian GNU/Linux 6.0.5 (squeeze)

-- Information about the crash:
I had followed a link from the dot.kde.org announcement of SFLPhone to the SFLPhone website itself (sflphone.org), and having wandered around there for a while (including several forwards and backwards movements) I decided to go back to dot.k.o, clicked 'Back' about 4 times, and after the last 'back' Konqueror immediately crashed.

 -- Backtrace:
Application: Konqueror (konqueror), signal: Segmentation fault
The current source language is "auto; currently asm".
[Current thread is 1 (Thread 0x7f70ba06d760 (LWP 2119))]

Thread 6 (Thread 0x7f70958f2700 (LWP 2448)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f7099908f41 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f70b30d58ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f70b98f892d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f709379b700 (LWP 2450)):
#0  0x00007f70b98ed9d3 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f70b2a292c9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f70b2a2971c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f70b7700706 in QEventDispatcherGlib::processEvents (this=0xc3203c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f70b76d59c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f70b76d5d9c in QEventLoop::exec (this=0x7f709379adc0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f70b75e577b in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f7099b65400 in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#8  0x00007f70b75e7e15 in QThreadPrivate::start (arg=0xca3c5a0) at thread/qthread_unix.cpp:248
#9  0x00007f70b30d58ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f70b98f892d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f708d5ef700 (LWP 2456)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f7099908f41 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f70b30d58ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f70b98f892d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()
The current source language is "auto; currently c".

Thread 3 (Thread 0x7f7088f3b700 (LWP 2872)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f7099908f41 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f70b30d58ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f70b98f892d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()
The current source language is "auto; currently asm".

Thread 2 (Thread 0x7f70837fe700 (LWP 3096)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f7099908f41 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f70b30d58ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f70b98f892d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f70ba06d760 (LWP 2119)):
[KCrash Handler]
#5  DOM::DocumentImpl::paintDevice (value=0x13a0efe0, style=0x37e22d0, part=0x13b61a60, op=MinPrefix) at ../../khtml/xml/dom_docimpl.h:378
#6  widthMediaFeatureEval (value=0x13a0efe0, style=0x37e22d0, part=0x13b61a60, op=MinPrefix) at ../../khtml/css/css_mediaquery.cpp:585
#7  0x00007f70aa297793 in khtml::MediaQueryEvaluator::eval (this=0xbad8e70, expr=0x698c3c0) at ../../khtml/css/css_mediaquery.cpp:780
#8  0x00007f70aa29790a in khtml::MediaQueryEvaluator::eval (this=0xbad8e70, mediaList=0x12b0dee0, styleSelector=0x77b7140) at ../../khtml/css/css_mediaquery.cpp:296
#9  0x00007f70aa27100c in khtml::CSSStyleSelectorList::append (this=0x16b1aa00, sheet=0xbdc3ed0, medium=<value optimized out>, styleSelector=<value optimized out>)
    at ../../khtml/css/cssstyleselector.cpp:2064
#10 0x00007f70aa280f21 in CSSStyleSelector (this=0x77b7140, doc=0xae49600, userStyleSheet=<value optimized out>, styleSheets=<value optimized out>, url=<value optimized out>, 
    _strictParsing=<value optimized out>) at ../../khtml/css/cssstyleselector.cpp:282
#11 0x00007f70aa1341e7 in DOM::DocumentImpl::rebuildStyleSelector (this=0xae49600) at ../../khtml/xml/dom_docimpl.cpp:2394
#12 0x00007f70aa13431d in DOM::DocumentImpl::updateStyleSelector (this=0xae49600, shallow=false) at ../../khtml/xml/dom_docimpl.cpp:2213
#13 0x00007f70aa1900ac in DOM::HTMLStyleElementImpl::parseText (this=0x6093760) at ../../khtml/html/html_headimpl.cpp:667
#14 0x00007f70aa13c61c in DOM::NodeBaseImpl::addChild (this=0x6093760, newChild=0x6d3ad90) at ../../khtml/xml/dom_nodeimpl.cpp:1811
#15 0x00007f70aa17b133 in khtml::KHTMLParser::insertNode (this=0x161ed6f0, n=0x6d3ad90, flat=true) at ../../khtml/html/htmlparser.cpp:414
#16 0x00007f70aa17d85b in khtml::KHTMLParser::parseToken (this=0x161ed6f0, t=0xaf76118) at ../../khtml/html/htmlparser.cpp:302
#17 0x00007f70aa17e211 in khtml::HTMLTokenizer::processToken (this=0xaf760f0) at ../../khtml/html/htmltokenizer.cpp:2056
#18 0x00007f70aa185bec in khtml::HTMLTokenizer::parseSpecial (this=0xaf760f0, src=<value optimized out>) at ../../khtml/html/htmltokenizer.cpp:372
#19 0x00007f70aa1873fe in khtml::HTMLTokenizer::parseTag (this=0xaf760f0, src=...) at ../../khtml/html/htmltokenizer.cpp:1560
#20 0x00007f70aa188b90 in khtml::HTMLTokenizer::write (this=0xaf760f0, str=<value optimized out>, appendData=<value optimized out>) at ../../khtml/html/htmltokenizer.cpp:1810
#21 0x00007f70aa0d6325 in KHTMLPart::write (this=<value optimized out>, 
    data=0x15121308 "<!DOCTYPE html><html><head><meta charset=\"utf-8\"><title>Twitter Follow Button</title><link rel=\"dns-prefetch\" href=\"//twitter.com\"><link rel=\"profile\" href=\"http://microformats.org/profile/hcard\"><sty"..., len=<value optimized out>) at ../../khtml/khtml_part.cpp:2102
#22 0x00007f70aa0c9af4 in KHTMLPart::slotRestoreData (this=0x13b61a60, data=...) at ../../khtml/khtml_part.cpp:1804
#23 0x00007f70aa0f3450 in KHTMLPart::qt_metacall (this=0x13b61a60, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff972d520) at ./khtml_part.moc:279
#24 0x00007f70b76ea2e6 in QMetaObject::activate (sender=0x732e690, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3295
#25 0x00007f70aa117542 in KHTMLPageCacheDelivery::emitData (this=0x0, _t1=<value optimized out>) at ./khtml_pagecache.moc:147
#26 0x00007f70aa117b56 in KHTMLPageCache::sendData (this=0xee18d0) at ../../khtml/khtml_pagecache.cpp:250
#27 0x00007f70aa118679 in KHTMLPageCache::qt_metacall (this=0xee18d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff972d650) at ./khtml_pagecache.moc:75
#28 0x00007f70b76ea2e6 in QMetaObject::activate (sender=0x3ea6d40, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3295
#29 0x00007f70b76f17ef in QSingleShotTimer::timerEvent (this=0x3ea6d40) at kernel/qtimer.cpp:308
#30 0x00007f70b76e6b43 in QObject::event (this=0x3ea6d40, e=0x7ffff972ddb0) at kernel/qobject.cpp:1212
#31 0x00007f70b67fe32c in QApplicationPrivate::notify_helper (this=0x869940, receiver=0x3ea6d40, e=0x7ffff972ddb0) at kernel/qapplication.cpp:4302
#32 0x00007f70b680480b in QApplication::notify (this=0x7ffff972e260, receiver=0x3ea6d40, e=0x7ffff972ddb0) at kernel/qapplication.cpp:4185
#33 0x00007f70b80bf796 in KApplication::notify (this=0x7ffff972e260, receiver=0x3ea6d40, event=0x7ffff972ddb0) at ../../kdeui/kernel/kapplication.cpp:302
#34 0x00007f70b76d709c in QCoreApplication::notifyInternal (this=0x7ffff972e260, receiver=0x3ea6d40, event=0x7ffff972ddb0) at kernel/qcoreapplication.cpp:726
#35 0x00007f70b7703e72 in QCoreApplication::sendEvent (this=0x86d600) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#36 QTimerInfoList::activateTimers (this=0x86d600) at kernel/qeventdispatcher_unix.cpp:603
#37 0x00007f70b77009e8 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#38 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#39 0x00007f70b2a256f2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x00007f70b2a29568 in ?? () from /lib/libglib-2.0.so.0
#41 0x00007f70b2a2971c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x00007f70b77006b3 in QEventDispatcherGlib::processEvents (this=0x84cf80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#43 0x00007f70b68ae19e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#44 0x00007f70b76d59c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#45 0x00007f70b76d5d9c in QEventLoop::exec (this=0x7ffff972e050, flags=) at kernel/qeventloop.cpp:201
#46 0x00007f70b76daa2b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#47 0x00007f70b9c4e76b in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../apps/konqueror/src/konqmain.cpp:257
#48 0x00007f70b9847c8d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7ffff972ec38) at libc-start.c:228
#49 0x0000000000400699 in _start ()

Reported using DrKonqi