Version:           1.2.1 (using KDE 4.2.1)
OS:                Linux
Installed from:    Ubuntu Packages

I had 2 dolphin windows open and was attempting to move multiple folders and files from one to the other.  Once I had selected all of the desired items I then dragged them onto the other dolphin window.  A popup menu was displayed containing 'move', 'copy' and 'cancel' menu items.  I tried to click on move but for some reason nothing happened.  I then realized that some of the items had been deselected and everytime I moved the mouse cursor the selection box would follow it even though the move/copy/cancel popup was still open.  I ended up clicking cancel so I could try to reselect the items and dolphin crashed.  Crash report is below.

Application: Dolphin (dolphin), signal SIGSEGV
0x00007f634eec16e1 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7f63532926f0 (LWP 8815)):
[KCrash Handler]
#5  0x00007f634fa885c0 in QEventLoop::exit () from /usr/lib/libQtCore.so.4
#6  0x00007f634ffba32a in QDragManager::eventFilter () from /usr/lib/libQtGui.so.4
#7  0x00007f634fa890e4 in QCoreApplicationPrivate::sendThroughApplicationEventFilters () from /usr/lib/libQtCore.so.4
#8  0x00007f634ff3dba6 in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#9  0x00007f634ff4622a in QApplication::notify () from /usr/lib/libQtGui.so.4
#10 0x00007f63513f271b in KApplication::notify (this=0x7fff5b2cca70, receiver=0x14994d0, event=0x7fff5b2c9c80) at /build/buildd/kde4libs-4.2.1a/kdeui/kernel/kapplication.cpp:307
#11 0x00007f634fa89d61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#12 0x00007f634ff455c8 in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#13 0x00007f634ffa9be9 in ?? () from /usr/lib/libQtGui.so.4
#14 0x00007f634ffa8607 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#15 0x00007f634ffd02c4 in ?? () from /usr/lib/libQtGui.so.4
#16 0x00007f634b7dbd5b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#17 0x00007f634b7df52d in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007f634b7df6eb in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#19 0x00007f634fab215f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#20 0x00007f634ffcfa6f in ?? () from /usr/lib/libQtGui.so.4
#21 0x00007f634fa88682 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#22 0x00007f634fa8880d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#23 0x00007f634ffb852b in QDragManager::drag () from /usr/lib/libQtGui.so.4
#24 0x00007f634ff503a8 in QDrag::exec () from /usr/lib/libQtGui.so.4
#25 0x00007f6352502602 in DragAndDropHelper::startDrag (this=<value optimized out>, itemView=<value optimized out>, supportedActions={i = 1529654592}, controller=0x1602820)
    at /build/buildd/kdebase-4.2.1/apps/dolphin/src/draganddrophelper.cpp:83
#26 0x00007f63524ee0ca in DolphinIconsView::startDrag (this=0x1611380, supportedActions={i = 1529654992}) at /build/buildd/kdebase-4.2.1/apps/dolphin/src/dolphiniconsview.cpp:212
#27 0x00007f63503b10d5 in QAbstractItemView::mouseMoveEvent () from /usr/lib/libQtGui.so.4
#28 0x00007f63503c79ba in QListView::mouseMoveEvent () from /usr/lib/libQtGui.so.4
#29 0x00007f63513dbfac in KCategorizedView::mouseMoveEvent (this=0x0, event=0x0) at /build/buildd/kde4libs-4.2.1a/kdeui/itemviews/kcategorizedview.cpp:1034
#30 0x00007f634ff90196 in QWidget::event () from /usr/lib/libQtGui.so.4
#31 0x00007f63503b58fd in QAbstractItemView::viewportEvent () from /usr/lib/libQtGui.so.4
#32 0x00007f634fa89038 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#33 0x00007f634ff3dc0c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#34 0x00007f634ff4622a in QApplication::notify () from /usr/lib/libQtGui.so.4
#35 0x00007f63513f271b in KApplication::notify (this=0x7fff5b2cca70, receiver=0x16102b0, event=0x7fff5b2cbc40) at /build/buildd/kde4libs-4.2.1a/kdeui/kernel/kapplication.cpp:307
#36 0x00007f634fa89d61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#37 0x00007f634ff455c8 in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#38 0x00007f634ffa9be9 in ?? () from /usr/lib/libQtGui.so.4
#39 0x00007f634ffa8607 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#40 0x00007f634ffd02c4 in ?? () from /usr/lib/libQtGui.so.4
#41 0x00007f634b7dbd5b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#42 0x00007f634b7df52d in ?? () from /usr/lib/libglib-2.0.so.0
#43 0x00007f634b7df6eb in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#44 0x00007f634fab215f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#45 0x00007f634ffcfa6f in ?? () from /usr/lib/libQtGui.so.4
#46 0x00007f634fa88682 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#47 0x00007f634fa8880d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#48 0x00007f634fa8acbd in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#49 0x00000000004421cd in main (argc=5, argv=0x7fff5b2ccf58) at /build/buildd/kdebase-4.2.1/apps/dolphin/src/main.cpp:94