Version:           3.5.4 (using KDE KDE 3.5.4)
Installed from:    Ubuntu Packages
OS:                Linux

When checking for email (only IMAP), KMail crash. Here is the stack trace:

#0  0x402e0dd7 in KMAcctCachedImap::processNewMail () from /usr/lib/libkmailprivate.so
#1  0x402e0faa in KMAcctCachedImap::processNewMail () from /usr/lib/libkmailprivate.so
#2  0x4027f008 in KMail::AccountManager::processNextCheck () from /usr/lib/libkmailprivate.so
#3  0x4027f1dc in KMail::AccountManager::singleCheckMail () from /usr/lib/libkmailprivate.so
#4  0x4020b10e in KMAccount::mailCheck () from /usr/lib/libkmailprivate.so
#5  0x4020b347 in KMAccount::qt_invoke () from /usr/lib/libkmailprivate.so
#6  0x402cad79 in KMail::NetworkAccount::qt_invoke () from /usr/lib/libkmailprivate.so
#7  0x402d69bf in KMail::ImapAccountBase::qt_invoke () from /usr/lib/libkmailprivate.so
#8  0x402df6f4 in KMAcctCachedImap::qt_invoke () from /usr/lib/libkmailprivate.so
#9  0x40cbaeb9 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0x40cbb954 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#11 0x4105039e in QTimer::timeout () from /usr/lib/libqt-mt.so.3
#12 0x40cdfeb1 in QTimer::event () from /usr/lib/libqt-mt.so.3
#13 0x40c50e56 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#14 0x40c51052 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#15 0x408cb9fb in KApplication::notify () from /usr/lib/libkdecore.so.4
#16 0x40be2157 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#17 0x40c42843 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#18 0x40bf5f67 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#19 0x40c69947 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#20 0x40c6986a in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#21 0x40c4f965 in QApplication::exec () from /usr/lib/libqt-mt.so.3