Version:           1.9.4 (using KDE KDE 3.5.4)
Installed from:    Gentoo Packages
Compiler:          gcc version 4.1.1 (Gentoo 4.1.1)
 
OS:                Linux

it came as usual while switching from one message to another in IMAP inbox ... but this time the backtrace is quite different, and I was unable to find 'fromDwString' in bugzilla, so I am reporting it as new ...

Using host libthread_db library "/lib/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1248544000 (LWP 6736)]
[New Thread -1277359200 (LWP 6745)]
[New Thread -1268966496 (LWP 6744)]
[New Thread -1260573792 (LWP 6743)]
[New Thread -1252181088 (LWP 6742)]
[KCrash handler]
#6  0xb5a8a351 in main_arena () from /lib/libc.so.6
#7  0x085f2858 in ?? ()
#8  0xb7ce5691 in KMMessage::fromDwString (this=0x843a388, str=@0xbfa25f20,
    aSetStatus=false) at kmmessage.cpp:411
#9  0xb7dd3c90 in KMFolderMbox::readMsg (this=0x8263d00, idx=107)
    at kmfoldermbox.cpp:801
#10 0xb7d7f960 in FolderStorage::getMsg (this=0x8263d00, idx=107)
    at folderstorage.cpp:475
#11 0xb7ddf08c in KMFolderImap::getMsg (this=0x8263d00, idx=107)
    at kmfolderimap.cpp:153
#12 0xb7d685e2 in KMFolder::getMsg (this=0x82630c8, idx=107)
    at kmfolder.cpp:310
#13 0xb7d3e12a in KMHeaders::currentMsg (this=0x828a5f0) at kmheaders.cpp:2356
#14 0xb7e523b7 in KMMainWidget::updateListFilterAction (this=0x8282048)
    at kmmainwidget.cpp:1455
#15 0xb7e52559 in KMMainWidget::updateMessageActions (this=0x8282048)
    at kmmainwidget.cpp:2939
#16 0xb7e5eca3 in KMMainWidget::qt_invoke (this=0x8282048, _id=61,
    _o=0xbfa26100) at kmmainwidget.moc:486
#17 0xb6085479 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#18 0xb60860cd in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#19 0xb63bffa9 in QTimer::timeout () from /usr/qt/3/lib/libqt-mt.so.3
#20 0xb60a8a8f in QTimer::event () from /usr/qt/3/lib/libqt-mt.so.3
#21 0xb6026447 in QApplication::internalNotify ()
   from /usr/qt/3/lib/libqt-mt.so.3
#22 0xb6027011 in QApplication::notify () from /usr/qt/3/lib/libqt-mt.so.3
#23 0xb66c456b in KApplication::notify (this=0xbfa265b8, receiver=0x8346d58,
    event=0xbfa263ac) at kapplication.cpp:550
#24 0xb601b5ac in QEventLoop::activateTimers ()
   from /usr/qt/3/lib/libqt-mt.so.3
#25 0xb5fd685c in QEventLoop::processEvents ()
   from /usr/qt/3/lib/libqt-mt.so.3
#26 0xb603cfd1 in QEventLoop::enterLoop () from /usr/qt/3/lib/libqt-mt.so.3
#27 0xb603ce56 in QEventLoop::exec () from /usr/qt/3/lib/libqt-mt.so.3
#28 0xb6025ecf in QApplication::exec () from /usr/qt/3/lib/libqt-mt.so.3
#29 0x0804a890 in main (argc=7, argv=0xbfa26844) at main.cpp:110