Version:           1.9.8 (using KDE Devel)
Installed from:    Compiled sources
OS:                Linux

In 100% of the cases, my kmail crashes when I try to remove an account.
Here's the backtrace:

System configuration startup check disabled.

[?1034hUsing host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb56946d0 (LWP 30211)]
[New Thread 0xb3abab90 (LWP 30215)]
[New Thread 0xb42bbb90 (LWP 30214)]
[New Thread 0xb4abcb90 (LWP 30213)]
[New Thread 0xb52bdb90 (LWP 30212)]
[KCrash handler]
#6  0x00000000 in ?? ()
#7  0xb7c0d0db in KMFolderMgr::removeFolderAux (this=0x819f630, 
    aFolder=0x82d6060, success=true)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.cpp:370
#8  0xb7c0df47 in KMFolderMgr::qt_invoke (this=0x819f630, _id=4, _o=0xbff59bd4)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.moc:255
#9  0xb5e5e8ad in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0xb7bbf39b in KMFolder::removed (this=0x82d6060, t0=0x82d6060, t1=true)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfolder.moc:357
#11 0xb7bc0185 in KMFolder::qt_emit (this=0x82d6060, _id=18, _o=0xbff59cc4)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfolder.moc:398
#12 0xb5e5e8f1 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#13 0xb7bdc0d3 in FolderStorage::removed (this=0x82d6168, t0=0x82d6060, 
    t1=true) at /mnt/sdb1/root/svn/kdepim/kmail/folderstorage.moc:433
#14 0xb7bdefa9 in FolderStorage::remove (this=0x82d6168)
    at /mnt/sdb1/root/svn/kdepim/kmail/folderstorage.cpp:748
#15 0xb7c7f6e5 in KMFolderImap::remove (this=0x82d6168)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfolderimap.cpp:237
#16 0xb7bbe868 in KMFolder::remove (this=0x82d6060)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfolder.cpp:511
#17 0xb7c0d27d in KMFolderMgr::removeFolder (this=0x819f630, aFolder=0x82d6060)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.cpp:342
#18 0xb7c0d378 in KMFolderMgr::remove (this=0x819f630, aFolder=0x82d6060)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.cpp:335
#19 0xb7c0d330 in KMFolderMgr::remove (this=0x819f630, aFolder=0x81b3bc8)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.cpp:331
#20 0xb7c0d330 in KMFolderMgr::remove (this=0x819f630, aFolder=0x819e5f8)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmfoldermgr.cpp:331
#21 0xb7cac643 in KMKernel::cleanupImapFolders (this=0xbff5aae4)
    at /mnt/sdb1/root/svn/kdepim/kmail/kmkernel.cpp:1555
#22 0xb7b232c7 in AccountsPageReceivingTab::save (this=0x83ec508)
    at /mnt/sdb1/root/svn/kdepim/kmail/configuredialog.cpp:1447
#23 0xb7b3aecd in ConfigModuleWithTabs::save (this=0x83e0ac8)
    at /mnt/sdb1/root/svn/kdepim/kmail/configuredialog_p.cpp:396
#24 0xb6d261bd in KCModuleProxy::save () from /opt/kde3/lib/libkutils.so.1
#25 0xb6d263ad in KCMultiDialog::apply () from /opt/kde3/lib/libkutils.so.1
#26 0xb6d2663b in KCMultiDialog::slotApply () from /opt/kde3/lib/libkutils.so.1
#27 0xb7b2cae5 in ConfigureDialog::slotApply (this=0x839fa48)
    at /mnt/sdb1/root/svn/kdepim/kmail/configuredialog.cpp:256
#28 0xb6805564 in KDialogBase::qt_invoke () from /opt/kde3/lib/libkdeui.so.4
#29 0xb6d25822 in KCMultiDialog::qt_invoke () from /opt/kde3/lib/libkutils.so.1
#30 0xb7b03dda in ConfigureDialog::qt_invoke (this=0x839fa48, _id=75, 
    _o=0xbff5a254) at /mnt/sdb1/root/svn/kdepim/kmail/configuredialog.moc:113
#31 0xb5e5e811 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#32 0xb5e5f44d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#33 0xb6199f7c in QButton::clicked () from /usr/lib/libqt-mt.so.3
#34 0xb5ef18ad in QButton::mouseReleaseEvent () from /usr/lib/libqt-mt.so.3
#35 0xb5e976e4 in QWidget::event () from /usr/lib/libqt-mt.so.3
#36 0xb5e000ac in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#37 0xb5e00fd3 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#38 0xb6534a52 in KApplication::notify () from /opt/kde3/lib/libkdecore.so.4
#39 0xb5d9f4fa in QETWidget::translateMouseEvent () from /usr/lib/libqt-mt.so.3
#40 0xb5d9e2c6 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#41 0xb5daf070 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#42 0xb5e16c30 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#43 0xb5e16ac6 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#44 0xb5dffc1f in QApplication::exec () from /usr/lib/libqt-mt.so.3
#45 0x0804adaf in main (argc=1, argv=0xbff5aca4)
    at /mnt/sdb1/root/svn/kdepim/kmail/main.cpp:110