Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Plasma getting idle after I trying to browse to change wallpaper in desktop settings. It's in fact working, but doesn't react on my actions. Sometimes after that it's just reporting about crash and sometimes it starting working again (and processing input action, which i've done while it was idle), but select-wallpaper-dialog doesn't shows any files or folders on my disks. Sorry my english.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 12322)]

Thread 3 (Thread 0xa6eeab90 (LWP 12361)):
#0  0xb80e0430 in __kernel_vsyscall ()
#1  0xb65f50e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67d52ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7edb172 in QWaitCondition::wait (this=0xa237be0, mutex=0xa237bdc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7818ac2 in QHostInfoAgent::run (this=0xa237bd0) at kernel/qhostinfo.cpp:260
#5  0xb7eda132 in QThreadPrivate::start (arg=0xa237bd0) at thread/qthread_unix.cpp:188
#6  0xb65f14ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb67c649e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa6535b90 (LWP 12476)):
#0  postEventSourcePrepare (s=0xa466af8, timeout=0xa6533b7c) at kernel/qeventdispatcher_glib.cpp:194
#1  0xb7ffa749 in postEventSourceCheck (source=0xa466af8) at kernel/qeventdispatcher_glib.cpp:203
#2  0xb66416f6 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3  0xb6641fdd in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb6642268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0xb7ffa317 in QEventDispatcherGlib::processEvents (this=0xa63f2a0, flags={i = -1504494392}) at kernel/qeventdispatcher_glib.cpp:329
#6  0xb7fcd1fa in QEventLoop::processEvents (this=0xa6533d44, flags={i = -1504494328}) at kernel/qeventloop.cpp:149
#7  0xb7fcd642 in QEventLoop::exec (this=0xa6533d44, flags={i = -1504494260}) at kernel/qeventloop.cpp:201
#8  0xb7a1415b in KIO::NetAccess::enter_loop (this=0xa6533db0) at /build/buildd/kde4libs-4.3.1/kio/kio/netaccess.cpp:502
#9  0xb7a1481f in KIO::NetAccess::synchronousRunInternal (this=0xa6533db0, job=0xa6d0890, window=0x0, data=0xa6533e34, finalURL=0x0, metaData=0x0)
    at /build/buildd/kde4libs-4.3.1/kio/kio/netaccess.cpp:487
#10 0xb7a14ed1 in KIO::NetAccess::synchronousRun (job=0xa6d0890, window=0x0, data=0xa6533e34, finalURL=0x0, metaData=0x0) at /build/buildd/kde4libs-4.3.1/kio/kio/netaccess.cpp:277
#11 0xa71f644f in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#12 0xa7200d19 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#13 0xa7203710 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#14 0xb7eda132 in QThreadPrivate::start (arg=0xa6d0890) at thread/qthread_unix.cpp:188
#15 0xb65f14ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#16 0xb67c649e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb60fea10 (LWP 12322)):
[KCrash Handler]
#6  0xb5d9413d in KFileWidget (this=0xac57eb8, _startDir=@0xbfbf9efc, parent=0xb615718) at /build/buildd/kde4libs-4.3.1/kfile/kfilewidget.cpp:598
#7  0xa4b7344b in KFileModule::createFileWidget (this=0xb63c090, startDir=@0xbfbf9efc, parent=0xb615718) at /build/buildd/kde4libs-4.3.1/kfile/kfilemodule.cpp:36
#8  0xb7a8a76f in KFileDialog (this=0xb615718, startDir=@0xbfbf9efc, filter=@0xbfbf9f08, parent=0xa9cf780, customWidget=0x0) at /build/buildd/kde4libs-4.3.1/kio/kfile/kfiledialog.cpp:238
#9  0xa87bc0ce in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#10 0xa87bf8cb in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#11 0xb7fe41b8 in QMetaObject::activate (sender=0x9d64650, from_signal_index=29, to_signal_index=30, argv=0xbfbfa02c) at kernel/qobject.cpp:3113
#12 0xb7fe45f0 in QMetaObject::activate (sender=0x9d64650, m=0xb73060a4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfbfa02c) at kernel/qobject.cpp:3207
#13 0xb711cf91 in QAbstractButton::clicked (this=0x9d64650, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#14 0xb6e443e9 in QAbstractButtonPrivate::emitClicked (this=0x9d658b8) at widgets/qabstractbutton.cpp:543
#15 0xb6e46044 in QAbstractButtonPrivate::click (this=0x9d658b8) at widgets/qabstractbutton.cpp:536
#16 0xb6e462d6 in QAbstractButton::mouseReleaseEvent (this=0x9d64650, e=0xbfbfa628) at widgets/qabstractbutton.cpp:1115
#17 0xb6f2dafc in QToolButton::mouseReleaseEvent (this=0x9d64650, e=0xbfbfa628) at widgets/qtoolbutton.cpp:709
#18 0xb6ae2973 in QWidget::event (this=0x9d64650, event=0xbfbfa628) at kernel/qwidget.cpp:7549
#19 0xb6e4428e in QAbstractButton::event (this=0x9d64650, e=0xbfbfa628) at widgets/qabstractbutton.cpp:1077
#20 0xb6f3052a in QToolButton::event (this=0x9d64650, event=0xbfbfa628) at widgets/qtoolbutton.cpp:1151
#21 0xb6a8bd3c in QApplicationPrivate::notify_helper (this=0x9b90ec0, receiver=0x9d64650, e=0xbfbfa628) at kernel/qapplication.cpp:4056
#22 0xb6a949b1 in QApplication::notify (this=0x9b8b380, receiver=0x9d64650, e=0xbfbfa628) at kernel/qapplication.cpp:3758
#23 0xb759c85d in KApplication::notify (this=0x9b8b380, receiver=0x9d64650, event=0xbfbfa628) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#24 0xb7fcebcb in QCoreApplication::notifyInternal (this=0x9b8b380, receiver=0x9d64650, event=0xbfbfa628) at kernel/qcoreapplication.cpp:610
#25 0xb6a93a1e in QApplicationPrivate::sendMouseEvent (receiver=0x9d64650, event=0xbfbfa628, alienWidget=0x9d64650, nativeWidget=0xa89f070, buttonDown=0xb730daa0, lastMouseReceiver=@0xb730daa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#26 0xb6b03cce in QETWidget::translateMouseEvent (this=0xa89f070, event=0xbfbfbcbc) at kernel/qapplication_x11.cpp:4409
#27 0xb6b03085 in QApplication::x11ProcessEvent (this=0x9b8b380, event=0xbfbfbcbc) at kernel/qapplication_x11.cpp:3428
#28 0xb6b2e37a in x11EventSourceDispatch (s=0x9b93d68, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0xb663eb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb66420eb in ?? () from /usr/lib/libglib-2.0.so.0
#31 0xb6642268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0xb7ffa2f8 in QEventDispatcherGlib::processEvents (this=0x9b90bd8, flags={i = -1077952904}) at kernel/qeventdispatcher_glib.cpp:327
#33 0xb6b2da75 in QGuiEventDispatcherGlib::processEvents (this=0x9b90bd8, flags={i = -1077952856}) at kernel/qguieventdispatcher_glib.cpp:202
#34 0xb7fcd1fa in QEventLoop::processEvents (this=0xbfbfbf20, flags={i = -1077952792}) at kernel/qeventloop.cpp:149
#35 0xb7fcd642 in QEventLoop::exec (this=0xbfbfbf20, flags={i = -1077952728}) at kernel/qeventloop.cpp:201
#36 0xb7fcfae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0xb6a8bbb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#38 0xb3cef310 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#39 0x0804e27d in launch (argc=1, _name=0x9b1357c "/usr/bin/plasma-desktop", args=0x9b13594 "", cwd=0x0, envc=0, envs=0x9b13598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#40 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#41 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#42 0x0804fbca in main (argc=2, argv=0xbfbfc714, envp=0xbfbfc720) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi