Application that crashed: kmail
Version of the application: 1.12.0
KDE Version: 4.3.00 (KDE 4.3.0)
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:
Drag and Dropping multiple images and I hit esc to get rid of *browse files* box after I realized I did not need to browse for the files, as I could drag and drop them.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  QX11Data::xdndHandleEnter (this=0x9aae490, xe=0xbfe0a26c) at kernel/qdnd_x11.cpp:833
#7  0xb605ea33 in QApplication::x11ClientMessage (this=0xbfe0a5c8, w=0xafb2e20, event=0xbfe0a26c, passive_only=true) at kernel/qapplication_x11.cpp:3118
#8  0xb607126a in QApplication::x11ProcessEvent (this=0xbfe0a5c8, event=0xbfe0a26c) at kernel/qapplication_x11.cpp:3682
#9  0xb609d37a in x11EventSourceDispatch (s=0x9aab948, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#10 0xb4174b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#11 0xb41780eb in ?? () from /usr/lib/libglib-2.0.so.0
#12 0xb4178268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#13 0xb5d9a2f8 in QEventDispatcherGlib::processEvents (this=0x9a853c8, flags={i = -1075796952}) at kernel/qeventdispatcher_glib.cpp:327
#14 0xb609ca75 in QGuiEventDispatcherGlib::processEvents (this=0x9a853c8, flags={i = -1075796904}) at kernel/qguieventdispatcher_glib.cpp:202
#15 0xb5d6d1fa in QEventLoop::processEvents (this=0xbfe0a4d0, flags={i = -1075796840}) at kernel/qeventloop.cpp:149
#16 0xb5d6d642 in QEventLoop::exec (this=0xbfe0a4d0, flags={i = -1075796776}) at kernel/qeventloop.cpp:201
#17 0xb5d6fae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#18 0xb5ffabb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#19 0x0804a7d0 in main (argc=) at /build/buildd/kdepim-4.3.0/kmail/main.cpp:146

Reported using DrKonqi