Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.30-8-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
It simply chrashed when I opened a folder from the desktop folder view. It doesn't do it again.
It might be due to a binary incompatability that ubuntu alpha 1 has right now, but thought I would report it anyway, in case it wasn't

 -- Backtrace:
Application: Plasma Workspace (kdeinit), signal: Segmentation fault
[Current thread is 0 (LWP 4503)]

Thread 2 (Thread 0x7fe96b172950 (LWP 4506)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fe98ab4683b in QWaitCondition::wait (this=<value optimized out>, mutex=0x1c30ab8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fe986f4cd1c in QHostInfoAgent::run (this=0x1c30aa0) at kernel/qhostinfo.cpp:260
#3  0x00007fe98ab45781 in QThreadPrivate::start (arg=0x1c30aa0) at thread/qthread_unix.cpp:189
#4  0x00007fe9878923ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fe9884791bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe98b10d760 (LWP 4503)):
[KCrash Handler]
#5  IconView::popupVisible (this=0x0) at ../../../../../apps/plasma/applets/folderview/iconview.cpp:1197
#6  0x00007fe96bb3d61d in PopupView::leaveEvent (this=0x2989850, event=0x7fffb60b8f80) at ../../../../../apps/plasma/applets/folderview/popupview.cpp:545
#7  0x00007fe988c02ad5 in QWidget::event (this=0x2989850, event=0x7fffb60b8f80) at kernel/qwidget.cpp:7647
#8  0x00007fe988bb33fc in QApplicationPrivate::notify_helper (this=0x13630d0, receiver=0x2989850, e=0x7fffb60b8f80) at kernel/qapplication.cpp:4057
#9  0x00007fe988bba6ae in QApplication::notify (this=0x135a240, receiver=0x2989850, e=0x7fffb60b8f80) at kernel/qapplication.cpp:4022
#10 0x00007fe989820c36 in KApplication::notify (this=0x135a240, receiver=0x2989850, event=0x7fffb60b8f80) at ../../kdeui/kernel/kapplication.cpp:302
#11 0x00007fe98ac2e3ec in QCoreApplication::notifyInternal (this=0x135a240, receiver=0x2989850, event=0x7fffb60b8f80) at kernel/qcoreapplication.cpp:610
#12 0x00007fe988bb966e in QApplicationPrivate::dispatchEnterLeave (enter=<value optimized out>, leave=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 0x00007fe988c1fbab in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffb60ba880) at kernel/qapplication_x11.cpp:3639
#14 0x00007fe988c49a34 in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#15 0x00007fe987ae28be in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0x00007fe987ae5f98 in ?? () from /usr/lib/libglib-2.0.so.0
#17 0x00007fe987ae60c0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0x00007fe98ac57706 in QEventDispatcherGlib::processEvents (this=0x13629f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#19 0x00007fe988c491de in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#20 0x00007fe98ac2ccc2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#21 0x00007fe98ac2d094 in QEventLoop::exec (this=0x7fffb60babb0, flags=) at kernel/qeventloop.cpp:200
#22 0x00007fe98ac2f189 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#23 0x00007fe97f09321f in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#24 0x0000000000406cd4 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a1e0 "0") at ../../kinit/kinit.cpp:671
#25 0x0000000000407980 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1163
#26 0x0000000000407f1f in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1356
#27 0x0000000000408ad2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1783