Version:           4.1 beta 2 (using KDE 4.0.83)
Installed from:    Ubuntu Packages
Compiler:          Kubuntu KDE 4.1 beta 2 ppa packages 
OS:                Linux

I added the folderview plasmoid to the desktop, configured it to display ~/Desktop, then resized the plasmoid and I had a crash

Stack trace:
Application: Espace de travail Plasma (<unknown>), signal SIGSEGV
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb5577720 (LWP 14704)]
[New Thread 0xb2695b90 (LWP 14712)]
[New Thread 0xb3a94b90 (LWP 14705)]
[KCrash handler]
#6  0xb6c59f36 in QAction::setEnabled () from /usr/lib/libQtGui.so.4
#7  0xb318d797 in KNewMenu::setPopupFiles ()
   from /usr/lib/kde4/lib/libkonq.so.5
#8  0xb31b430d in ?? ()
   from /usr/lib/kde4/lib/kde4/plasma_applet_folderview.so
#9  0xb31bbc22 in ?? ()
   from /usr/lib/kde4/lib/kde4/plasma_applet_folderview.so
#10 0xb76934f9 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#11 0xb7693bc2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#12 0xb702be37 in QMenu::aboutToShow () from /usr/lib/libQtGui.so.4
#13 0xb70305c6 in QMenu::popup () from /usr/lib/libQtGui.so.4
#14 0xb703163d in QMenu::internalDelayedPopup () from /usr/lib/libQtGui.so.4
#15 0xb70333fd in QMenu::timerEvent () from /usr/lib/libQtGui.so.4
#16 0xb768ec9a in QObject::event () from /usr/lib/libQtCore.so.4
#17 0xb6cb5c6f in QWidget::event () from /usr/lib/libQtGui.so.4
#18 0xb7031845 in QMenu::event () from /usr/lib/libQtGui.so.4
#19 0xb6c5ec0c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#20 0xb6c63898 in QApplication::notify () from /usr/lib/libQtGui.so.4
#21 0xb7afed93 in KApplication::notify (this=0x80769b8, receiver=0xbff72bf8, 
    event=0xbff72958)
    at /build/buildd/kde4libs-4.0.83/kdeui/kernel/kapplication.cpp:311
#22 0xb767e6a9 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#23 0xb76ac1a1 in ?? () from /usr/lib/libQtCore.so.4
#24 0xb76a9a40 in ?? () from /usr/lib/libQtCore.so.4
#25 0xb59e2bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0xb59e5e5e in ?? () from /usr/lib/libglib-2.0.so.0
#27 0xb59e63ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0xb76a9f98 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#29 0xb6cf21b5 in ?? () from /usr/lib/libQtGui.so.4
#30 0xb767d92d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#31 0xb767dabd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#32 0xb70369b7 in QMenu::exec () from /usr/lib/libQtGui.so.4
#33 0xb7d0ec8c in Plasma::Containment::contextMenuEvent ()
   from /usr/lib/kde4/lib/libplasma.so.2
#34 0xb71ce049 in QGraphicsItem::sceneEvent () from /usr/lib/libQtGui.so.4
#35 0xb721032c in QGraphicsWidget::sceneEvent () from /usr/lib/libQtGui.so.4
#36 0xb71e73cc in ?? () from /usr/lib/libQtGui.so.4
#37 0xb71f37e5 in QGraphicsScene::contextMenuEvent ()
   from /usr/lib/libQtGui.so.4
#38 0xb71f45c6 in QGraphicsScene::event () from /usr/lib/libQtGui.so.4
#39 0xb6c5ec0c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#40 0xb6c637a9 in QApplication::notify () from /usr/lib/libQtGui.so.4
#41 0xb7afed93 in KApplication::notify (this=0x80769b8, receiver=0x80fd7e8, 
    event=0xbff7318c)
    at /build/buildd/kde4libs-4.0.83/kdeui/kernel/kapplication.cpp:311
#42 0xb767e6a9 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#43 0xb7204710 in QGraphicsView::contextMenuEvent ()
   from /usr/lib/libQtGui.so.4
#44 0xb6cb69b0 in QWidget::event () from /usr/lib/libQtGui.so.4
#45 0xb6feb063 in QFrame::event () from /usr/lib/libQtGui.so.4
#46 0xb707ec0f in QAbstractScrollArea::viewportEvent ()
   from /usr/lib/libQtGui.so.4
#47 0xb72047cf in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#48 0xb707ff95 in ?? () from /usr/lib/libQtGui.so.4
#49 0xb767ea21 in QCoreApplicationPrivate::sendThroughObjectEventFilters ()
   from /usr/lib/libQtCore.so.4
#50 0xb6c5ebe3 in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#51 0xb6c6400e in QApplication::notify () from /usr/lib/libQtGui.so.4
#52 0xb7afed93 in KApplication::notify (this=0x80769b8, receiver=0x80fe7d0, 
    event=0xbff73764)
    at /build/buildd/kde4libs-4.0.83/kdeui/kernel/kapplication.cpp:311
#53 0xb767e6a9 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#54 0xb6ccb448 in ?? () from /usr/lib/libQtGui.so.4
#55 0xb6cc96b1 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#56 0xb6cf23ba in ?? () from /usr/lib/libQtGui.so.4
#57 0xb59e2bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#58 0xb59e5e5e in ?? () from /usr/lib/libglib-2.0.so.0
#59 0xb59e63ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#60 0xb76a9f98 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#61 0xb6cf21b5 in ?? () from /usr/lib/libQtGui.so.4
#62 0xb767d92d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#63 0xb767dabd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#64 0xb767fd3d in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#65 0xb6c5e567 in QApplication::exec () from /usr/lib/libQtGui.so.4
#66 0xb7f662f6 in kdemain () from /usr/lib/kde4/lib/libkdeinit4_plasma.so
#67 0x08048582 in _start ()
#0  0xb7f7e410 in __kernel_vsyscall ()