Using KDE 4.1.1 (KDE 4.1.0 (4.1 >= 20080722)) (KDEmod) in Arch Linux i686:
I can reproduce this bugs.

Steps to reproduce:
- Open KFind
- Find some files
- Select and copy some of the files in the find list. (try to select first a big file to make the "copy dialog" still a longer time)

- Paste them in a folder in Dolphin

The copy dialog will appear. 
- Now, close the KFind dialog. When the big first file is copied, and before the next file starts to copy, KFind will crash (I suppose because the "source list"(KFind Window) isn't there anymore)

However, the copy dialog finish OK, and the files are indeed copied.

Here is a more detailed backtrace (using Qt4.4.0):

Aplicación: KFind (kfind), señal SIGABRT
[Thread debugging using libthread_db enabled]
[New Thread 0xb5dd5970 (LWP 5585)]
[KCrash handler]
#6  0xb8058424 in __kernel_vsyscall ()
#7  0xb618b740 in raise () from /lib/libc.so.6
#8  0xb618d078 in abort () from /lib/libc.so.6
#9  0xb61c6c0d in __libc_message () from /lib/libc.so.6
#10 0xb61cca44 in malloc_printerr () from /lib/libc.so.6
#11 0xb61ce3cc in free () from /lib/libc.so.6
#12 0xb638f801 in operator delete () from /usr/lib/libstdc++.so.6
#13 0xb6542e4b in ~QMimeSource (this=0x83a6a10) at kernel/qmime.cpp:66
#14 0xb651e8d3 in ~QMimeSourceWrapper (this=0xbfc735c3)
    at kernel/qclipboard_p.h:128
#15 0xb658789f in cleanupClipboardData () at kernel/qclipboard_x11.cpp:191
#16 0xb7295771 in qt_call_post_routines () at kernel/qcoreapplication.cpp:164
#17 0xb6516f2d in ~QApplication (this=0xbfc737a8)
    at kernel/qapplication.cpp:945
#18 0xb78b7411 in ~KApplication (this=0xbfc737a8)
    at /home/jan/Source/packages/kde41/work/kdelibs/src/kdelibs-4.1.0/kdeui/kernel/kapplication.cpp:944
#19 0x0805ef14 in main (argc=2, argv=0xbfc739c4)
    at /home/jan/Source/packages/kde41/work/kdebase/src/kdebase-4.1.0/apps/kfind/main.cpp:56
#0  0xb8058424 in __kernel_vsyscall ()

Can confirm also that the close button on the kfind dialog causes the same crash in the same situation.

Still in 4.1 unfortunately.
Try searching for *.desktop stop the search half way through and then click close on the dialogue.

kfind still crashes everytime. :(

Using:
Qt: 4.4.3
KDE: 4.1.82 (KDE 4.1.82 (KDE 4.2 >= 20081204))
kdelibs svn rev. 895490 / kdebase svn rev. 895490

KFind doesn't crash, but the behaviour is strange. To select more than one file , you need to use the CTRL key (no mouse rubberband selection), dragging the selected items to dolphin and selecting "Copy Here" creates symlinks (?) (some times it copy the file)

*** Bug 179657 has been marked as a duplicate of this bug. ***

Kubuntu 8.10 64-bit
KDE 4.1.3

I experienced a crash similar to the one reported above.  However my crash report is slightly different than the one posted above so I'm not sure if this is related to the same bug.


Application: KFind (kfind), signal SIGABRT
(no debugging symbols found)
............................
[Thread debugging using libthread_db enabled]
[New Thread 0x7faa8620b6f0 (LWP 15926)]
(no debugging symbols found)
............................
[KCrash handler]
#5  0x00007faa832f3015 in raise () from /lib/libc.so.6
#6  0x00007faa832f4b83 in abort () from /lib/libc.so.6
#7  0x00007faa833340c8 in ?? () from /lib/libc.so.6
#8  0x00007faa83339a58 in ?? () from /lib/libc.so.6
#9  0x00007faa8333c0a6 in free () from /lib/libc.so.6
#10 0x00007faa83b1abdd in ?? () from /usr/lib/libQtGui.so.4
#11 0x00007faa83b7c46a in ?? () from /usr/lib/libQtGui.so.4
#12 0x00007faa848fc315 in qt_call_post_routines ()
   from /usr/lib/libQtCore.so.4
#13 0x00007faa83b13388 in QApplication::~QApplication ()
   from /usr/lib/libQtGui.so.4
#14 0x000000000041ae74 in _start ()
#0  0x00007faa833686b0 in nanosleep () from /lib/libc.so.6

*** Bug 185063 has been marked as a duplicate of this bug. ***

Still happening in kde 4.2 :

Application: KFind (kfind), signal SIGABRT
[Current thread is 1 (Thread 0xb5b818e0 (LWP 6942))]

Thread 1 (Thread 0xb5b818e0 (LWP 6942)):
[KCrash Handler]
#6  0xffffe424 in __kernel_vsyscall ()
#7  0xb6547c00 in raise () from /lib/i686/libc.so.6
#8  0xb6549668 in abort () from /lib/i686/libc.so.6
#9  0xb6588f73 in ?? () from /lib/i686/libc.so.6
#10 0x00000000 in ?? ()

@Tony: we can't be sure that your last posted backtrace is the same as the original reported one. You need to install the "kdebase-apps-debuginfo" package.
Thanks

I don't know if this is any better, I installed every debug package I could see for every kde package that I have installed, kdebase-apps-debuginfo does not exist, It's Mandriva Linux (Cooker,) If anyone knows the right package :

Application: KFind (kfind), signal SIGABRT
[Current thread is 1 (Thread 0xb5a668e0 (LWP 17250))]

Thread 1 (Thread 0xb5a668e0 (LWP 17250)):
[KCrash Handler]
#6  0xffffe424 in __kernel_vsyscall ()
#7  0xb642cc00 in raise () from /lib/i686/libc.so.6
#8  0xb642e668 in abort () from /lib/i686/libc.so.6
#9  0xb646df73 in ?? () from /lib/i686/libc.so.6
#10 0xb7041018 in ?? ()
#11 0xb753340c in ?? () from /usr/lib/libkdeui.so.5
#12 0xb6550ff4 in ?? () from /lib/i686/libc.so.6
#13 0x0a35f4a8 in ?? ()
#14 0x0a35f4a8 in ?? ()
#15 0xb6537957 in ?? () from /lib/i686/libc.so.6
#16 0xb6470049 in ?? () from /lib/i686/libc.so.6
#17 0xb7f4c9c0 in ?? ()
#18 0xbff79354 in ?? ()
#19 0xb6550ff4 in ?? () from /lib/i686/libc.so.6
#20 0x0a2a8168 in ?? ()
#21 0x0a35f4a8 in ?? ()
#22 0xbff79298 in ?? ()
#23 0xb646fee5 in free () from /lib/i686/libc.so.6
Backtrace stopped: frame did not save the PC

May be it's "kdebase4-apps-debuginfo"

I've asked on the Mandriva cooker mailing list, There was one extra debug package I didn't already have installed, That I was told I needed to install.
I've installed it.
The back trace is still the same.

I will ask on the list again but is there no one else that can reproduce this that is setup better for debugging? I have limited diskspace now after installing so many debug packages.
dolphin - tools - find file - *.??? (*.wav if you like) - select all found files from kfind - copy and paste them into a new tab open in dolphin - close kfind - crash.

Unless I get a definate answer from the cooker people on the list, I can't help at all here.

It doesn't need to be a huge amount of files, 30, 40, 50 Files have been causing it when I reproduce it.

this might be a more helpful trace. I'm pretty sure I'm experiencing the same bug in KDE, only this time I searched for a file, I then copied the file, pasted the file to the desktop folder and then closed kfind. 

I'm running KDE 4.2.1 on Gentoo x86_64.

Application: KFind (kfind), signal SIGABRT
0x00007fd85da348d0 in __nanosleep_nocancel () from /lib/libc.so.6
Current language:  auto; currently c

Thread 1 (Thread 0x7fd861917750 (LWP 2827)):
[KCrash Handler]
#5  0x00007fd85d9c71e5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#6  0x00007fd85d9c8703 in *__GI_abort () at abort.c:88
#7  0x00007fd85da02998 in __libc_message (do_abort=2, fmt=0x7fd85dab39b8 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:170
#8  0x00007fd85da08138 in malloc_printerr (action=2, str=0x7fd85dab0fed "free(): invalid pointer", ptr=<value optimized out>) at malloc.c:5994
#9  0x00007fd85da09c76 in *__GI___libc_free (mem=0x7fd85daaa260) at malloc.c:3625
#10 0x00007fd85e647a40 in ~QMimeSourceWrapper (this=0x16b1ab0) at kernel/qclipboard_p.h:126
#11 0x00007fd85e6a7c3a in cleanupClipboardData () at kernel/qclipboard_x11.cpp:194
#12 0x00007fd85f8a0f39 in qt_call_post_routines () at kernel/qcoreapplication.cpp:163
#13 0x00007fd85e63d2d8 in ~QApplication (this=0x7fff699581c0) at kernel/qapplication.cpp:985
#14 0x000000000041b27a in main (argc=2, argv=0x7fff69958828) at /var/tmp/portage/kde-base/kfind-4.2.1/work/kfind-4.2.1/apps/kfind/main.cpp:56


Some environment information that I think might be relevant is as follows:

Portage 2.1.6.7 (default/linux/amd64/2008.0, gcc-4.3.3, glibc-2.9_p20081201-r2, 2.6.28-gentoo-r3 x86_64)
=================================================================
System uname: Linux-2.6.28-gentoo-r3-x86_64-Intel-R-_Core-TM-2_Duo_CPU_E8200_@_2.66GHz-with-glibc2.2.5
Timestamp of tree: Mon, 09 Mar 2009 09:30:01 +0000
ccache version 2.4 [enabled]
app-shells/bash:     3.2_p48-r1
dev-java/java-config: 2.1.7
dev-lang/python:     2.5.4-r2
dev-util/ccache:     2.4-r8
dev-util/cmake:      2.6.3
sys-apps/baselayout: 2.0.0
sys-apps/openrc:     0.4.3-r1
sys-apps/sandbox:    1.4
sys-devel/autoconf:  2.13, 2.63
sys-devel/automake:  1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2
sys-devel/binutils:  2.19.1
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6a
virtual/os-headers:  2.6.28-r1

SVN commit 941969 by darioandres:

Q3ListView -> QTreeView + ListModel + ProxyModel
Updated D&D support (fixes bug 169941)
KonqPopupMenu integration

BUG:169941


 M  +1 -1      CMakeLists.txt  
 M  +18 -33    kfinddlg.cpp  
 M  +375 -306  kfwin.cpp  
 M  +97 -45    kfwin.h  


WebSVN link: http://websvn.kde.org/?view=rev&revision=941969

*** Bug 196702 has been marked as a duplicate of this bug. ***