This simply popped up about 30 seconds after KDE started up.  I moved my 
$KDEHOME directory so that I could see how things were working with a fresh 
install.  The aRts server startup was turned off before, but the fresh 
install turned it back on.

[New Thread 1024 (LWP 2888)]
0x40ff8ec9 in wait4 () from /lib/libc.so.6
#0  0x40ff8ec9 in wait4 () from /lib/libc.so.6
#1  0x41062e4c in __check_rhosts_file () from /lib/libc.so.6
#2  0x402e4173 in waitpid () from /lib/libpthread.so.0
#3  0x405e6715 in KCrash::defaultCrashHandler (signal=6)
    at /ks/kdelibs/kdecore/kcrash.cpp:197
#4  0x402e1dd4 in pthread_sighandler () from /lib/libpthread.so.0
#5  0x40f82a18 in sigaction () from /lib/libc.so.6
#6  0x402e21ad in raise () from /lib/libpthread.so.0
#7  0x40f83f41 in abort () from /lib/libc.so.6
#8  0x40f12318 in __terminate () from /usr/lib/libstdc++-libc6.2-2.so.3
#9  0x40f12335 in __terminate () from /usr/lib/libstdc++-libc6.2-2.so.3
#10 0x40082bbb in __pure_virtual () at /ks/kdelibs/arts/mcop/asyncstream.h:66
#11 0x40252e92 in Arts::Dispatcher::connectUrl (this=0xbffff848, 
    url=@0x809f7b0) at /ks/kdelibs/arts/mcop/dispatcher.cc:898
#12 0x40252c06 in Arts::Dispatcher::connectObjectRemote (this=0xbffff848, 
    reference=@0xbfffec48) at /ks/kdelibs/arts/mcop/dispatcher.cc:861
#13 0x40047cc7 in Arts::SimpleSoundServer_base::_fromReference (r=0xbfffec48, 
    needcopy=true) at soundserver.cc:745
#14 0x40047a5c in Arts::SimpleSoundServer_base::_fromString (
    objectref=0xbfffece8) at soundserver.cc:720
#15 0x40021232 in KNotify::connectSoundServer (this=0xbffff810)
    at ../../arts/soundserver/soundserver.h:455
#16 0x4001ed83 in KNotify::notifyBySound (this=0xbffff810, sound=@0xbffff0b8)
    at /ks/kdelibs/arts/knotify/knotify.cpp:261
#17 0x4001eb71 in KNotify::notify (this=0xbffff0b8, event=@0xbffff0e8, 
    fromApp=@0xbffff0e4, text=@0xbffff0e0, sound=0xbffff0b8, file=0xbffff0bc, 
    present=1, level=-1) at /ks/kdelibs/arts/knotify/knotify.cpp:236
#18 0x40021f21 in KNotify::process (this=0xbffff810, fun=@0xbffff384, 
    data=@0xbffff37c, replyType=@0xbffff374, replyData=@0xbffff36c)
    at knotify_skel.cpp:40
#19 0x406a39c1 in DCOPClient::receive (this=0x804c1e0, objId=@0xbffff38c, 
    fun=@0xbffff384, data=@0xbffff37c, replyType=@0xbffff374, 
    replyData=@0xbffff36c) at /ks/kdelibs/dcop/dcopclient.cpp:1290
#20 0x40696664 in DCOPProcessInternal (d=0x804c7e0, opcode=1, key=1, 
    dataReceived=@0xbffff454, canPost=true)
    at /ks/kdelibs/dcop/dcopclient.cpp:354
#21 0x406961fe in DCOPProcessMessage (iceConn=0x804d348, 
    clientObject=0x804c7e0, opcode=1, length=163, replyWait=0x0, 
    replyWaitRet=0xbffff4b4) at /ks/kdelibs/dcop/dcopclient.cpp:295
#22 0x406ad5b5 in KDE_IceProcessMessages (iceConn=0x804d348, replyWait=0x0, 
    replyReadyRet=0x0) at /ks/kdelibs/dcop/KDE-ICE/process.c:325
#23 0x406a45e5 in DCOPClient::processSocketData (this=0x804c1e0)
    at /ks/kdelibs/dcop/dcopclient.cpp:1492
#24 0x40965f6f in QObject::activate_signal () from /ks/qt-copy/lib/libqt.so.2
#25 0x409d8728 in QSocketNotifier::activated () from 
/ks/qt-copy/lib/libqt.so.2
#26 0x409ab47e in QSocketNotifier::event () from /ks/qt-copy/lib/libqt.so.2
#27 0x408f1c09 in QApplication::notify () from /ks/qt-copy/lib/libqt.so.2
#28 0x405592f4 in KApplication::notify (this=0xbffff8e4, receiver=0x808ed58, 
    event=0xbffff65c) at /ks/kdelibs/kdecore/kapp.cpp:524
#29 0x408b40e6 in sn_activate () from /ks/qt-copy/lib/libqt.so.2
#30 0x408b4a1f in QApplication::processNextEvent ()
   from /ks/qt-copy/lib/libqt.so.2
#31 0x408f3f84 in QApplication::enter_loop () from /ks/qt-copy/lib/libqt.so.2
#32 0x408b41b7 in QApplication::exec () from /ks/qt-copy/lib/libqt.so.2
#33 0x4001bcbe in main (argc=1, argv=0xbffffa7c)
    at /ks/kdelibs/arts/knotify/knotify.cpp:105
#34 0x40f732eb in __libc_start_main () from /lib/libc.so.6