Application that crashed: konqueror
Version of the application: 4.3.2 (KDE 4.3.2)
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I closed Konqueror while having a splitted tab. One side with a sftp instance and another with http. 

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  0x000000000060b800 in QListData::shared_null ()
#6  0x00007f3940b7e516 in qDeleteAll<QList<KIO::Slave*>::const_iterator> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:350
#7  qDeleteAll<SlaveList> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:358
#8  ~ProtocolInfo (begin=<value optimized out>, end=...) at ../../kio/kio/scheduler.cpp:171
#9  qDeleteAll<QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:350
#10 0x00007f3940b7a323 in qDeleteAll<KIO::SchedulerPrivate::ProtocolInfoDict> () at /usr/include/qt4/QtCore/qalgorithms.h:358
#11 ~SchedulerPrivate () at ../../kio/kio/scheduler.cpp:103
#12 destroy () at ../../kio/kio/scheduler.cpp:209
#13 0x00007f393f181422 in __run_exit_handlers (status=0, listp=0x7f393f4994c8, run_list_atexit=true) at exit.c:78
#14 0x00007f393f181475 in *__GI_exit (status=31137744) at exit.c:100
#15 0x000000000040726b in launch (argc=2, _name=0x182ebe8 "/usr/bin/konqueror", args=<value optimized out>, cwd=0x0, envc=0, envs=0x182ec0c "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x182ec14 "HEMTux;1260523109;670132;3379_TIME39833594") at ../../kinit/kinit.cpp:677
#16 0x0000000000407a28 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#17 0x0000000000407fae in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#18 0x000000000040863b in main (argc=2, argv=0x7fff768ca8f8, envp=0x7fff768ca910) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi