Version:           3.1.1 (using KDE 3.1.1)
Installed from:    compiled sources
Compiler:          gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)
OS:          Linux (i686) release 2.4.17

I simply klicked on a smb-mounted directory (which worked already and also after a konqueror restart works again), and konqi crashed:
[New Thread 1024 (LWP 2216)]
0x4102b669 in __wait4 () from /lib/i686/libc.so.6
#0  0x4102b669 in __wait4 () from /lib/i686/libc.so.6
#1  0x410a7154 in __DTOR_END__ () from /lib/i686/libc.so.6
#2  0x40eeb523 in waitpid (pid=3361, stat_loc=0x0, options=0)
    at wrapsyscall.c:172
#3  0x405acf98 in KCrash::defaultCrashHandler (sig=11) at kcrash.cpp:235
#4  0x40ee98d5 in pthread_sighandler (signo=11, ctx=
      {gs = 7, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 49168, edi = 1, esi = 3221215760, ebp = 3221215816, esp = 3221215728, ebx = 1080432804, edx = 140130240, ecx = 140207759, eax = 280415551, trapno = 14, err = 4, eip = 1079712102, cs = 35, __csh = 0, eflags = 66183, esp_at_signal = 3221215728, ss = 43, __ssh = 0, fpstate = 0xbfffd770, oldmask = 2147483648, cr2 = 280415551}) at signals.c:97
#5  <signal handler called>
#6  trailingSlash (_trailing=1, path=@0xbfffda60)
    at /opt/qt3.1/include/qstring.h:259
#7  0x405b1f00 in KURL::path (this=0x847b328, _trailing=1) at kurl.h:250
#8  0x405b10a4 in KURL::equals (this=0x847b328, _u=@0xbfffdec0, 
    ignore_trailing=true) at kurl.cpp:913
#9  0x405b1054 in KURL::cmp (this=0x847b328, u=@0xbfffdec0, 
    ignore_trailing=true) at kurl.cpp:903
#10 0x401d1579 in KDirLister::slotJobToBeKilled (this=0x852d578, 
    url=@0xbfffdec0) at ../kio/jobclasses.h:373
#11 0x401d2314 in KDirLister::qt_invoke (this=0x852d578, _id=7, _o=0xbfffdc00)
    at /opt/qt3.1/include/private/qucom_p.h:312
#12 0x4097fe37 in QObject::activate_signal (this=0x852d578, clist=0x852d7a8, 
    o=0xbfffdc00) at kernel/qobject.cpp:2212
#13 0x401d1a5b in KDirLister::completed (this=0x852d578, t0=@0xbfffdec0)
    at kdirlister.moc:241
#14 0x401cc271 in KDirListerCache::slotUpdateResult (this=0x8514fe8, 
    j=0x85b66c8) at kdirlister.cpp:1294
#15 0x401d2ad0 in KDirListerCache::qt_invoke (this=0x8514fe8, _id=10, 
    _o=0xbfffdf90) at /opt/qt3.1/include/private/qucom_p.h:312
#16 0x4097fe37 in QObject::activate_signal (this=0x85b66c8, clist=0x85a7920, 
    o=0xbfffdf90) at kernel/qobject.cpp:2212
#17 0x40149803 in KIO::Job::result (this=0x85b66c8, t0=0x85b66c8)
    at jobclasses.moc:156
#18 0x4013630e in KIO::Job::emitResult (this=0x85b66c8) at job.cpp:183
#19 0x40137969 in KIO::SimpleJob::slotFinished (this=0x85b66c8) at job.cpp:501
#20 0x4013e34a in KIO::ListJob::slotFinished (this=0x85b66c8) at job.cpp:1675
#21 0x4014b93e in KIO::ListJob::qt_invoke (this=0x85b66c8, _id=16, 
    _o=0xbfffe350) at jobclasses.moc:1350
#22 0x4097fe37 in QObject::activate_signal (this=0x844e1e8, clist=0x8464ee8, 
    o=0xbfffe350) at kernel/qobject.cpp:2212
#23 0x4097fcea in QObject::activate_signal (this=0x844e1e8, signal=6)
    at kernel/qobject.cpp:2186
#24 0x4012dad5 in KIO::SlaveInterface::finished (this=0x844e1e8)
    at /opt/qt3.1/include/qmetaobject.h:261
#25 0x4012a8e2 in KIO::SlaveInterface::dispatch (this=0x844e1e8, _cmd=104, 
    rawdata=@0xbfffe930) at slaveinterface.cpp:256
#26 0x4012a4bc in KIO::SlaveInterface::dispatch (this=0x844e1e8)
    at slaveinterface.cpp:192
#27 0x40127bf1 in KIO::Slave::gotInput (this=0x844e1e8) at slave.cpp:221
#28 0x40129ded in KIO::Slave::qt_invoke (this=0x844e1e8, _id=4, _o=0xbfffeab0)
    at slave.moc:113
#29 0x4097fe37 in QObject::activate_signal (this=0x80cc118, clist=0x85d83b0, 
    o=0xbfffeab0) at kernel/qobject.cpp:2212
#30 0x409800ca in QObject::activate_signal (this=0x80cc118, signal=2, param=15)
    at kernel/qobject.cpp:2277
#31 0x40c0daec in QSocketNotifier::activated (this=0x80cc118, t0=15)
    at .moc/debug-shared-mt/moc_qsocketnotifier.cpp:85
#32 0x4099a5ce in QSocketNotifier::event (this=0x80cc118, e=0xbfffed70)
    at kernel/qsocketnotifier.cpp:268
#33 0x409322b2 in QApplication::internalNotify (this=0xbffff3d0, 
    receiver=0x80cc118, e=0xbfffed70) at kernel/qapplication.cpp:2350
#34 0x4093165e in QApplication::notify (this=0xbffff3d0, receiver=0x80cc118, 
    e=0xbfffed70) at kernel/qapplication.cpp:2112
#35 0x4053809e in KApplication::notify (this=0xbffff3d0, receiver=0x80cc118, 
    event=0xbfffed70) at kapplication.cpp:455
#36 0x40c52c66 in QApplication::sendEvent (receiver=0x80cc118, 
    event=0xbfffed70) at kernel/qapplication.h:478
#37 0x40914c33 in QEventLoop::activateSocketNotifiers (this=0x80ab3a8)
    at kernel/qeventloop_unix.cpp:544
#38 0x408f12eb in QEventLoop::processEvents (this=0x80ab3a8, flags=4)
    at kernel/qeventloop_x11.cpp:307
#39 0x40943fd9 in QEventLoop::enterLoop (this=0x80ab3a8)
    at kernel/qeventloop.cpp:191
#40 0x40943efc in QEventLoop::exec (this=0x80ab3a8)
    at kernel/qeventloop.cpp:138
#41 0x4093244b in QApplication::exec (this=0xbffff3d0)
    at kernel/qapplication.cpp:2471
#42 0x412911fd in main (argc=3, argv=0x805c670) at konq_main.cc:130
#43 0x0804cb2c in launch (argc=3, _name=0x805c064 "konqueror", 
    args=0x805c0af "", cwd=0x0, envc=0, envs=0x805c0b3 "", reset_env=false, 
    tty=0x0, avoid_loops=false, startup_id_str=0x804f4aa "0") at kinit.cpp:547
#44 0x0804d873 in handle_launcher_request (sock=7) at kinit.cpp:1030
#45 0x0804dd1a in handle_requests (waitForPid=0) at kinit.cpp:1196
#46 0x0804ec33 in main (argc=3, argv=0xbffffc44, envp=0xbffffc54)
    at kinit.cpp:1547
#47 0x40f8d507 in __libc_start_main (main=0x804e650 <main>, argc=3, 
    ubp_av=0xbffffc44, init=0x804a8c8 <_init>, fini=0x804f364 <_fini>, 
    rtld_fini=0x4000dc14 <_dl_fini>, stack_end=0xbffffc3c)
    at ../sysdeps/generic/libc-start.c:129