Application: kget (2.4.1)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32.10-90.fc12.i686.PAE i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
1) Clicked "remove all completed" - but only one item in the list & it was finished
2) Immediately clicked the close button in the window title bar
3) CRASH!
4) Over to you ;)

 -- Backtrace:
Application: KGet (kget), signal: Aborted
[KCrash Handler]
#6  0x00ee0424 in __kernel_vsyscall ()
#7  0x00888a91 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0x0088a35a in abort () at abort.c:92
#9  0x020597ec in qt_message_output (msgType=QtFatalMsg, buf=
    0x8845560 "Fatal Error: Accessed global static 'SchedulerPrivate *schedulerPrivate()' after destruction. Defined at /builddir/build/BUILD/kdelibs-4.4.1/kio/kio/scheduler.cpp:320")
    at global/qglobal.cpp:2250
#10 0x020599cc in qt_message (msgType=QtFatalMsg, msg=0x3f94b70 "Fatal Error: Accessed global static '%s *%s()' after destruction. Defined at %s:%d", ap=
    0xbf87da54 "z\213\372\003i\213\372\003\204\211\372\003@\001") at global/qglobal.cpp:2296
#11 0x02059aea in qFatal (msg=0x3f94b70 "Fatal Error: Accessed global static '%s *%s()' after destruction. Defined at %s:%d") at global/qglobal.cpp:2479
#12 0x03ee79fc in operator-> (job=0x8a42e68) at /usr/src/debug/kdelibs-4.4.1/kio/kio/scheduler.cpp:320
#13 KIO::Scheduler::cancelJob (job=0x8a42e68) at /usr/src/debug/kdelibs-4.4.1/kio/kio/scheduler.cpp:357
#14 0x03e327a9 in KIO::SimpleJob::doKill (this=0x8a42e68) at /usr/src/debug/kdelibs-4.4.1/kio/kio/job.cpp:316
#15 0x030cf213 in KJob::kill (this=0x8a42e68, verbosity=Quietly) at /usr/src/debug/kdelibs-4.4.1/kdecore/jobs/kjob.cpp:106
#16 0x03e326a7 in KIO::Job::doKill (this=0x8a4b068) at /usr/src/debug/kdelibs-4.4.1/kio/kio/job.cpp:180
#17 0x030cf213 in KJob::kill (this=0x8a4b068, verbosity=Quietly) at /usr/src/debug/kdelibs-4.4.1/kdecore/jobs/kjob.cpp:106
#18 0x00efb06b in ?? () from /usr/lib/kde4/kget_checksumsearchfactory.so
#19 0x0088c09f in __run_exit_handlers (status=<value optimized out>) at exit.c:78
#20 exit (status=<value optimized out>) at exit.c:100
#21 0x00874bbe in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=<value optimized out>) at libc-start.c:258
#22 0x080667f1 in _start ()

Reported using DrKonqi