Application: kmail (1.13.7)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-CHAKRA i686
Distribution: "Chakra Linux"

-- Information about the crash:
- What I was doing when the application crashed:
I requested reboot from KDM. KMail was in tray.
- Custom settings of the application:
Tiling enabled.

I am just a user - I will not able to help further. I paste the crash log for the sake of overall quality.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#7  KMFilterMgr::ref (this=0x0) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmfiltermgr.cpp:360
#8  0xb6c5e57d in KMail::AccountManager::processNextCheck (this=0x94634f0, _newMail=false) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/accountmanager.cpp:230
#9  0xb6c5f208 in KMail::AccountManager::qt_metacall (this=0x94634f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbff6c374)
    at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/accountmanager.moc:102
#10 0xb5e4b1ac in QMetaObject::metacall (object=0x94634f0, cl=QMetaObject::InvokeMetaMethod, idx=12, argv=0xbff6c374) at kernel/qmetaobject.cpp:237
#11 0xb5e5cca7 in QMetaObject::activate (sender=0x9405ca8, m=0xb71325c4, local_signal_index=0, argv=0xbff6c374) at kernel/qobject.cpp:3278
#12 0xb6bd6d3f in KMAccount::finishedCheck (this=0x9405ca8, _t1=false, _t2=KMAccount::CheckOK) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmaccount.moc:174
#13 0xb6bd9ab3 in KMAccount::checkDone (this=0x9405ca8, newmail=false, status=KMAccount::CheckOK) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmaccount.cpp:515
#14 0xb6cce710 in KMAcctImap::killAllJobs (this=0x9405ca8, disconnectSlave=true) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmacctimap.cpp:204
#15 0xb6cce9b2 in ~KMAcctImap (this=0x9405ca8, __in_chrg=<value optimized out>) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmacctimap.cpp:86
#16 0xb6cceea2 in ~KMAcctImap (this=0x9405ca8, __in_chrg=<value optimized out>) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmacctimap.cpp:99
#17 0xb6c5d4a6 in qDeleteAll<QList<KMAccount*>::const_iterator> (this=0x94634f0, __in_chrg=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:322
#18 qDeleteAll<QList<KMAccount*> > (this=0x94634f0, __in_chrg=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:330
#19 ~AccountManager (this=0x94634f0, __in_chrg=<value optimized out>) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/accountmanager.cpp:39
#20 0xb6c5d592 in ~AccountManager (this=0x94634f0, __in_chrg=<value optimized out>) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/accountmanager.cpp:40
#21 0xb6d391b1 in KMKernel::cleanup (this=0xbff6c644) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/kmkernel.cpp:1805
#22 0x0804a95d in main (argc=6821796, argv=0xb77cac18) at /home/anke/desktop-testing/kdepim/src/kdepim-4.4.11.1/kmail/main.cpp:160

Reported using DrKonqi