Version:           1.9.1 (using KDE KDE 3.5.2)
Installed from:    Gentoo Packages
OS:                Linux

Does not happen very frequently, but has happened to me more than once.  Reading mail over IMAP.  I type 'd' to delete the current message, and kmail crashes.  I don't know how to reproduce consistantly.

Stack trace:

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 3884)]
[New Thread 32769 (LWP 3885)]
[New Thread 16386 (LWP 3886)]
[New Thread 32771 (LWP 3887)]
[New Thread 49156 (LWP 3888)]
[New Thread 65541 (LWP 3889)]
[KCrash handler]
#6  0x00002aaaaae9b6e4 in KMFolder::open (this=0x0) at kmfolder.cpp:473
#7  0x00002aaaaaff579a in KMail::ImapJob::init (this=0x12f17b0, 
    jt=KMail::FolderJob::tGetMessage, sets=
      {static null = {static null = <same as static member of an already seen type>, d = 0x508e30, static shared_null = 0x508e30}, d = 0x508e30, static shared_null = 0x508e30}, folder=0x0, msgList=@0x12f1800) at imapjob.cpp:92
#8  0x00002aaaaaff6850 in KMail::ImapJob::execute (this=0x12f17b0)
    at kmfolder.h:130
#9  0x00002aaaaaf3048d in KMFolderImap::doCreateJob (this=0x9a16f0, 
    msg=0xed75a0, jt=19863472, folder=0x0, partSpecifier=
      {static null = {static null = <same as static member of an already seen type>, d = 0x508e30, static shared_null = 0x508e30}, d = 0x2aaaab2d3710, static shared_null = 0x508e30}, as=0xba8a40) at kmfolderimap.cpp:1561
#10 0x00002aaaaaeb7268 in FolderStorage::createJob (this=0x9a16f0, 
    msg=0xed75a0, jt=KMail::FolderJob::tGetMessage, folder=0x0, partSpecifier=)
    at folderstorage.cpp:564
#11 0x00002aaaaae9b448 in KMFolder::createJob (this=0x99cdc0, msg=0xed75a0, 
    jt=KMail::FolderJob::tGetMessage, folder=0x0, partSpecifier=)
    at kmfolder.cpp:342
#12 0x00002aaaaafd3758 in KMMainWidget::slotMsgSelected (this=0xaa5350, 
    msg=0xed75a0) at kmmsgbase.h:146
#13 0x00002aaaaafe1507 in KMMainWidget::qt_invoke (this=0xaa5350, _id=54, 
    _o=0x7fffffc2ac10) at qucom_p.h:316
#14 0x00002aaaaf561408 in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#15 0x00002aaaaae68616 in KMHeaders::selected (this=0x7fffffc2ac40, 
    t0=0xed75a0) at kmheaders.moc:250
#16 0x00002aaaaae687d3 in KMHeaders::highlightMessage (this=0xab11f0, 
    lvi=0xab1320, markitread=false) at qguardedptr.h:113
#17 0x00002aaaaae6917a in KMHeaders::finalizeMove (this=0xab11f0, 
    item=0x1186a80, contentX=0, contentY=55300) at kmheaders.cpp:1466
#18 0x00002aaaaae697cc in KMHeaders::deleteMsg (this=0xab11f0)
    at kmheaders.cpp:1409
#19 0x00002aaaaafe15b3 in KMMainWidget::qt_invoke (this=0xaa5350, _id=46, 
    _o=0x7fffffc2adf0) at kmmainwidget.moc:469
#20 0x00002aaaaf561408 in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#21 0x00002aaaaf561b72 in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#22 0x00002aaaae23dc5f in KAction::qt_invoke ()
   from /usr/kde/3.5/lib64/libkdeui.so.4
#23 0x00002aaaaf561408 in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#24 0x00002aaaaf561b72 in QObject::activate_signal ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#25 0x00002aaaae8db575 in KAccelPrivate::emitActivatedSignal ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#26 0x00002aaaae8dc099 in KAccelPrivate::eventFilter ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#27 0x00002aaaaf55ea17 in QObject::activate_filters ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#28 0x00002aaaaf55eafe in QObject::event () from /usr/qt/3/lib64/libqt-mt.so.3
#29 0x00002aaaaf593823 in QWidget::event () from /usr/qt/3/lib64/libqt-mt.so.3
#30 0x00002aaaaf642af5 in QMainWindow::event ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#31 0x00002aaaaf50641d in QApplication::internalNotify ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#32 0x00002aaaaf506a40 in QApplication::notify ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#33 0x00002aaaae8571c1 in KApplication::notify ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#34 0x00002aaaae8da049 in KAccelEventHandler::x11Event ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#35 0x00002aaaae859eae in KApplication::x11EventFilter ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#36 0x00002aaaaf49c341 in qt_set_x11_event_filter ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#37 0x00002aaaaf4a89fc in QApplication::x11ProcessEvent ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#38 0x00002aaaaf4ba90b in QEventLoop::processEvents ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#39 0x00002aaaaf51a8a9 in QEventLoop::enterLoop ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#40 0x00002aaaaf51a802 in QEventLoop::exec ()
   from /usr/qt/3/lib64/libqt-mt.so.3
#41 0x0000000000402d3e in main (argc=-4016192, argv=0x7fffffc2bc08)
    at kapplication.h:224
Current language:  auto; currently c