Version:           1.9.1 (using KDE 3.5.1, Kubuntu Package 4:3.5.1-0ubuntu5 dapper)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15-15-686

When I applay the "Mark as Ham" filter to my lkml archive (> 2000 Mails), KMail hangs in an infinite loop. I'm using bogofilter and I think that this is not part of the problem. I suspect that the hang occurs after every mail has been piped to the external command, e.g. during some kind of cleanup in KMails code.

I attached gdb to the hanging KMail process and made a backtrace

Backtrace follows:

0x3720b37f in QListViewItem::listView () from /usr/lib/libqt-mt.so.3
(gdb) bt
#0  0x3720b37f in QListViewItem::listView () from /usr/lib/libqt-mt.so.3
#1  0x35f6b2f0 in KListViewItem::insertItem (this=0x8ddd2a0, item=0xb2e3210) at klistview.cpp:2205
#2  0x37c6c8ee in KMHeaders::msgAdded () from /usr/lib/libkmailprivate.so
#3  0x37c6d1aa in KMHeaders::qt_invoke () from /usr/lib/libkmailprivate.so
#4  0x3711a39a in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#5  0x3711ab7c in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#6  0x37c99d83 in KMFolder::msgAdded () from /usr/lib/libkmailprivate.so
#7  0x37c9e1ac in KMFolder::qt_emit () from /usr/lib/libkmailprivate.so
#8  0x3711a241 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#9  0x3711ab7c in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0x37cb585f in FolderStorage::msgAdded () from /usr/lib/libkmailprivate.so
#11 0x37cb6a7f in FolderStorage::emitMsgAddedSignals () from /usr/lib/libkmailprivate.so
#12 0x37d5712f in KMFolderMaildir::addMsgInternal () from /usr/lib/libkmailprivate.so
#13 0x37d57875 in KMFolderMaildir::addMsg () from /usr/lib/libkmailprivate.so
#14 0x37cb9fd8 in FolderStorage::addMsgKeepUID () from /usr/lib/libkmailprivate.so
#15 0x37c99315 in KMFolder::addMsgKeepUID () from /usr/lib/libkmailprivate.so
#16 0x37ce10d2 in KMFilterMgr::endFiltering () from /usr/lib/libkmailprivate.so
#17 0x37ce28a6 in KMFilterMgr::process () from /usr/lib/libkmailprivate.so
#18 0x37dd1608 in KMFilterActionCommand::execute () from /usr/lib/libkmailprivate.so
#19 0x37dc61f2 in KMCommand::slotPostTransfer () from /usr/lib/libkmailprivate.so
#20 0x37dcbc3b in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#21 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#22 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#23 0x37dc5114 in KMCommand::messagesTransfered () from /usr/lib/libkmailprivate.so
#24 0x37dcb7ef in KMCommand::transferSelectedMsgs () from /usr/lib/libkmailprivate.so
#25 0x37dcba46 in KMCommand::slotStart () from /usr/lib/libkmailprivate.so
#26 0x37dcbc4d in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#27 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#28 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0x374a931e in QSignal::signal () from /usr/lib/libqt-mt.so.3
#30 0x371379cc in QSignal::activate () from /usr/lib/libqt-mt.so.3
#31 0x3713f4bc in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#32 0x370b065a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#33 0x370b084c in QApplication::notify () from /usr/lib/libqt-mt.so.3
#34 0x377a8c7d in KApplication::notify (this=0x3fa76968, receiver=0x8291e58, event=0x3fa74d48) at kapplication.cpp:550
#35 0x37041967 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#36 0x370a2047 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#37 0x37055753 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#38 0x370c92eb in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
---Type <return> to continue, or q <return> to quit---
#39 0x370af112 in QApplication::processEvents () from /usr/lib/libqt-mt.so.3
#40 0x37dd168f in KMFilterActionCommand::execute () from /usr/lib/libkmailprivate.so
#41 0x37dc61f2 in KMCommand::slotPostTransfer () from /usr/lib/libkmailprivate.so
#42 0x37dcbc3b in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#43 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#44 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#45 0x37dc5114 in KMCommand::messagesTransfered () from /usr/lib/libkmailprivate.so
#46 0x37dcb7ef in KMCommand::transferSelectedMsgs () from /usr/lib/libkmailprivate.so
#47 0x37dcba46 in KMCommand::slotStart () from /usr/lib/libkmailprivate.so
#48 0x37dcbc4d in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#49 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#50 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#51 0x374a931e in QSignal::signal () from /usr/lib/libqt-mt.so.3
#52 0x371379cc in QSignal::activate () from /usr/lib/libqt-mt.so.3
#53 0x3713f4bc in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#54 0x370b065a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#55 0x370b084c in QApplication::notify () from /usr/lib/libqt-mt.so.3
#56 0x377a8c7d in KApplication::notify (this=0x3fa76968, receiver=0x8274410, event=0x3fa755c8) at kapplication.cpp:550
#57 0x37041967 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#58 0x370a2047 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#59 0x37055753 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#60 0x370c92eb in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#61 0x370af112 in QApplication::processEvents () from /usr/lib/libqt-mt.so.3
#62 0x37dd168f in KMFilterActionCommand::execute () from /usr/lib/libkmailprivate.so
#63 0x37dc61f2 in KMCommand::slotPostTransfer () from /usr/lib/libkmailprivate.so
#64 0x37dcbc3b in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#65 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#66 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#67 0x37dc5114 in KMCommand::messagesTransfered () from /usr/lib/libkmailprivate.so
#68 0x37dcb7ef in KMCommand::transferSelectedMsgs () from /usr/lib/libkmailprivate.so
#69 0x37dcba46 in KMCommand::slotStart () from /usr/lib/libkmailprivate.so
#70 0x37dcbc4d in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#71 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#72 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#73 0x374a931e in QSignal::signal () from /usr/lib/libqt-mt.so.3
#74 0x371379cc in QSignal::activate () from /usr/lib/libqt-mt.so.3
#75 0x3713f4bc in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#76 0x370b065a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#77 0x370b084c in QApplication::notify () from /usr/lib/libqt-mt.so.3
---Type <return> to continue, or q <return> to quit---
#78 0x377a8c7d in KApplication::notify (this=0x3fa76968, receiver=0x825b3c0, event=0x3fa75e48) at kapplication.cpp:550
#79 0x37041967 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#80 0x370a2047 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#81 0x37055753 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#82 0x370c92eb in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#83 0x370af112 in QApplication::processEvents () from /usr/lib/libqt-mt.so.3
#84 0x37dd168f in KMFilterActionCommand::execute () from /usr/lib/libkmailprivate.so
#85 0x37dc61f2 in KMCommand::slotPostTransfer () from /usr/lib/libkmailprivate.so
#86 0x37dcbc3b in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#87 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#88 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#89 0x37dc5114 in KMCommand::messagesTransfered () from /usr/lib/libkmailprivate.so
#90 0x37dcb7ef in KMCommand::transferSelectedMsgs () from /usr/lib/libkmailprivate.so
#91 0x37dcba46 in KMCommand::slotStart () from /usr/lib/libkmailprivate.so
#92 0x37dcbc4d in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#93 0x37dcc08b in KMFilterActionCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#94 0x3711a26d in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#95 0x374a931e in QSignal::signal () from /usr/lib/libqt-mt.so.3
#96 0x371379cc in QSignal::activate () from /usr/lib/libqt-mt.so.3
#97 0x3713f4bc in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#98 0x370b065a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#99 0x370b084c in QApplication::notify () from /usr/lib/libqt-mt.so.3
#100 0x377a8c7d in KApplication::notify (this=0x3fa76968, receiver=0x82500b0, event=0x3fa766c8) at kapplication.cpp:550
#101 0x37041967 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#102 0x370a2047 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#103 0x37055753 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#104 0x370c9153 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#105 0x370c9076 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#106 0x370af169 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#107 0x0804a04b in ?? ()
#108 0x3fa76968 in ?? ()
#109 0x3fa76b54 in ?? ()
#110 0x00000000 in ?? ()
(gdb)