Version:            (using KDE KDE 3.4.92)
Installed from:    Gentoo Packages
OS:                Linux

Here's the backtrace of a konqueror crash on "Quit". I had a single tab open (with some /. discussion).

Using host libthread_db library "/lib/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1232021840 (LWP 11111)]
[KCrash handler]
#4  0xffffe410 in __kernel_vsyscall ()
#5  0xb6938651 in raise () from /lib/libc.so.6
#6  0xb693a15c in abort () from /lib/libc.so.6
#7  0xb6931d09 in __assert_fail () from /lib/libc.so.6
#8  0xb626c684 in khtml::Cache::clear () at loader.cpp:1304
#9  0xb614cb65 in ~KHTMLFactory (this=0x856aaf8) at khtml_factory.cpp:98
#10 0xb614cd62 in KHTMLFactory::deref () at khtml_factory.cpp:139
#11 0xb614ca97 in ~KHTMLFactory (this=0x887ec00) at khtml_factory.cpp:103
#12 0xb7759f15 in ~KLibrary (this=0x8572790) at klibloader.cpp:131
#13 0xb775bb44 in KLibLoader::close_pending (this=0x83131b8, wrap=0x84d7358)
    at klibloader.cpp:516
#14 0xb775b00d in ~KLibLoader (this=0x83131b8) at klibloader.cpp:328
#15 0xb775a9c8 in KLibLoader::cleanUp () at klibloader.cpp:298
#16 0xb76b08eb in ~KApplication (this=0xbfe42820) at kapplication.cpp:1610
#17 0xb66ba2b9 in ~KonquerorApplication (this=0x0) at konq_main.cc:58
#18 0xb66b848e in kdemain (argc=0, argv=0x0) at konq_main.cc:221
#19 0xb6753806 in kdeinitmain (argc=0, argv=0x0) at konqueror_dummy.cc:3
#20 0x0804dcfc in launch (argc=2, _name=0x81d52e4 "konqueror", 
    args=0x81d532d "/home/gilles", cwd=0x81d532d "/home/gilles", envc=69, 
    envs=0x81d5d41 "", reset_env=true, tty=0x0, avoid_loops=false, 
    startup_id_str=0x0) at kinit.cpp:637
#21 0x0804f329 in handle_launcher_request (sock=4) at kinit.cpp:1201
#22 0x0804f97b in handle_requests (waitForPid=0) at kinit.cpp:1394
#23 0x08050938 in main (argc=2, argv=0xbfe42f44, envp=0x0) at kinit.cpp:1848