korganizer crash on strlen of an attachment

I'm consistently getting this stack trace while having korganizer up. I suspect it might be loading a calendar that has bad data in it...? The crash doesn't happen right away, so I was thinking that the it was happening while downloading one of my online calendars. But I couldn't poke the program into crashing by manually right-clicking and hitting reload. 

Any suggestions on how I can identify the offending data?

Thanks!

j.joseph

#6  0x0036e743 in strlen () from /lib/libc.so.6
#7  0x06a1facf in QString::fromUtf8 () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#8  0x00ba25f5 in KCal::Attachment::Attachment () from /usr/lib/libkcal.so.2
#9  0x00bd915f in KCal::ICalFormatImpl::readAttachment ()
   from /usr/lib/libkcal.so.2
#10 0x00bdec37 in KCal::ICalFormatImpl::readIncidence ()
   from /usr/lib/libkcal.so.2
#11 0x00bdf7b5 in KCal::ICalFormatImpl::readTodo () from /usr/lib/libkcal.so.2
#12 0x00be0207 in KCal::ICalFormatImpl::populate () from /usr/lib/libkcal.so.2
#13 0x00bd297c in KCal::ICalFormat::fromRawString () from /usr/lib/libkcal.so.2
#14 0x00bd2dd3 in KCal::ICalFormat::load () from /usr/lib/libkcal.so.2
#15 0x00c06b99 in KCal::FileStorage::load () from /usr/lib/libkcal.so.2
#16 0x05301b2e in EventArchiver::archiveIncidences ()
   from /usr/lib/libkorganizer.so.1
#17 0x0530377c in EventArchiver::run () from /usr/lib/libkorganizer.so.1
#18 0x05304c8d in EventArchiver::runAuto () from /usr/lib/libkorganizer.so.1
#19 0x052df6c7 in ActionManager::slotAutoArchive ()
   from /usr/lib/libkorganizer.so.1
#20 0x052ea543 in ActionManager::qt_invoke () from /usr/lib/libkorganizer.so.1
#21 0x066f0b5a in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#22 0x066f266b in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#23 0x06a8b699 in QTimer::timeout () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#24 0x06718edc in QTimer::event () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#25 0x06687dbd in QApplication::internalNotify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#26 0x06688f16 in QApplication::notify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#27 0x05ea7122 in KApplication::notify () from /usr/lib/libkdecore.so.4
#28 0x0667c513 in QEventLoop::activateTimers ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#29 0x06630ad1 in QEventLoop::processEvents ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#30 0x066a24a0 in QEventLoop::enterLoop ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#31 0x066a2366 in QEventLoop::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#32 0x0668849f in QApplication::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#33 0x0804fe62 in QWidget::setUpdatesEnabled ()
#34 0x0030f5d6 in __libc_start_main () from /lib/libc.so.6
#35 0x0804fc11 in QWidget::setUpdatesEnabled ()