Did you got a backtrace of the crash ? Thanks

I could install the debug packages on the kubuntu daily live usb and post an bt if i only knew what gdb packages i need.

You probably need:
"kdebase-apps-dbg", "kdelibs5-dbg", and "strigi-dbg" (this may be not available)
Thanks

Created attachment 34900 [details]
dolphin gdb no bt

Created attachment 34901 [details]
konqueror bt

I installed "kdebase-runtime-dbg", "kdelibs-dbg", and "strigi-dbg" but i wasn't able to get an bt from dolphin.
But i post one dolphin file and thats what gdb printed but it's no bt.

Konqueror on the other hand gave me an bt. :)
Konqueror didn't die now it only hanged untill i killed it, but dolphin died.

When you run Dolphin you need to use the "--nofork" command option in GDB:

Example:
"gdb dolphin" + Return
"run --nofork" + Return
reproduce Crash
"bt full" + Return

BTW: this is probably related to bug 195462 (bug in the strigi analyzer for MP4 files not using the predefined maximum file size, so it is reading all the file, causing a hang/crash)

Thanks

Created attachment 34954 [details]
dolphin bt

The bug you linked to sounds releated.
In one of my testings with konqueror it read the hole file and showed the properties.
And the right click>properties worked fast after that until i closed konqueror, when i reopened it it was as before and it needed to read the hole file again.

Pasting backtrace inline:
--------

#0  0x07cffa11 in memcpy () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#1  0x04e810da in QIODevice::read (this=0xbfb2fdb4, data=0x3dfbfa "",
    maxSize=1619585650) at /usr/include/bits/string3.h:52
        d = (QIODevicePrivate * const) 0x93b7250
        readSoFar = <value optimized out>
        moreToRead = 248
#2  0x00a7e301 in QIODeviceInputStream::fillBuffer (this=0xbfb2fcdc,
    start=0x3dfbfa "", space=1619585650) at ../../kio/kio/kfilemetainfo.cpp:67
        nwritten = <value optimized out>
#3  0x00a814aa in Strigi::BufferedStream<char>::writeToBuffer (
    this=0xbfb2fcdc, ntoread=1623647852, maxread=1623647852)
    at /usr/include/strigi/bufferedstream.h:116
        space = 1619585650
        missing = 1619585650
        nwritten = <value optimized out>
#4  0x00a815a0 in Strigi::BufferedStream<char>::read (this=0xbfb2fcdc,
    start=@0xbfb2fbc4, min=154890908, max=1623647852)
    at /usr/include/strigi/bufferedstream.h:137
        nread = <value optimized out>
#5  0x020d1d00 in Mp4ThroughAnalyzer::connectInputStream ()
   from /usr/lib/strigi/strigita_mp4.so
No symbol table info available.
#6  0x00c3949f in Strigi::StreamAnalyzerPrivate::analyze (this=0x93c00d0,
    idx=@0xbfb2fd28, input=0xbfb2fcdc)
    at /build/buildd/strigi-0.6.5/src/streamanalyzer/streamanalyzer.cpp:394
        finished = <value optimized out>
        header = 0x9432478 "��@\t\220a�\a����moov.trak.mdia"
        headersize = 1024
        es = 155235048
#7  0x00a7ec4a in KFileMetaInfoPrivate::init (this=0x93b6088,
    stream=@0xbfb2fdb4, url=@0xbfb2fe10, mtime=1245643849)
    at ../../kio/kio/kfilemetainfo.cpp:201
        indexer = (class Strigi::StreamAnalyzer &) @0x93b2ba8: {p = 0x93c00d0}
        strigiStream = {<Strigi::BufferedStream<char>> = {<Strigi::StreamBase<char>> = {<Strigi::StreamBaseBase> = {_vptr.StreamBaseBase = 0xbf94e8,
        m_size = -1, m_position = 0, m_error = {static npos = 4294967295,
          _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x54273c ""}},
        m_status = Strigi::Ok}, <No data fields>}, buffer = {start = 0x0,
      size = 1623647852, readPos = 0x0, avail = 4062202},
    finishedWritingToBuffer = false}, in = @0xbfb2fdb4}
        __PRETTY_FUNCTION__ = "void KFileMetaInfoPrivate::init(QIODevice&, const KUrl&, time_t)"
        idx = {p = 0x940b000}
        writer = {<Strigi::IndexWriter> = {
    _vptr.IndexWriter = 0xbf95a8}, <No data fields>}
#8  0x00a8057f in KFileMetaInfo (this=0xbfb2fe18, url=@0xbfb2fe10)
    at ../../kio/kio/kfilemetainfo.cpp:240
        fileinfo = {d_ptr = 0x93b1d98}
        file = {<QIODevice> = {<QObject> = {_vptr.QObject = 0x4fd7fa8,
      static staticMetaObject = {d = {superdata = 0x0,
          stringdata = 0x4f80c80 "QObject", data = 0x4f80d20,
          extradata = 0x4fd41b8}}, d_ptr = 0x93b7250,
      static staticQtMetaObject = {d = {superdata = 0x0,
          stringdata = 0x4f8a460 "Qt", data = 0x4f8d340, extradata = 0x0}}},
    static staticMetaObject = {d = {superdata = 0x80c1540,
        stringdata = 0x4f91460 "QIODevice", data = 0x4f914c0,
        extradata = 0x0}}}, static staticMetaObject = {d = {
      superdata = 0x4fd8028, stringdata = 0x4f91400 "QFile", data = 0x4f91420,
      extradata = 0x0}}}
#9  0x00a6736a in KFileItem::metaInfo (this=0x93a6e90, autoget=true)
    at ../../kio/kio/kfileitem.cpp:1217
        isLocalUrl = true
        url = {<QUrl> = {d = 0x93b70e8}, d = 0x0}
#10 0x00b422aa in KFileMetaPropsPlugin (this=0x93b6b40, props=0x93a47c8)
    at ../../kio/kfile/kmetaprops.cpp:63
        fileitem = (KFileItem &) @0x93a6e90: {d = {d = 0x8e939d8}}
#11 0x00b702dc in KPropertiesDialog::KPropertiesDialogPrivate::insertPages (
    this=0x8ebf950) at ../../kio/kfile/kpropertiesdialog.cpp:523
        mimetype = {static null = {<No data fields>}, static shared_null = {
    ref = {_q_value = 10269}, alloc = 0, size = 0, data = 0x80c1682,
    clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0,
    reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 60},
    alloc = 0, size = 0, data = 0x4fd946e, clean = 0, simpletext = 0,
    righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}},
  d = 0x97712c, static codecForCStrings = 0x0}
        __PRETTY_FUNCTION__ = "void KPropertiesDialog::KPropertiesDialogPrivate::insertPages()"
        item = {d = {d = 0xbfeff4}}
        query = {static null = {<No data fields>}, static shared_null = {
    ref = {_q_value = 10269}, alloc = 0, size = 0, data = 0x80c1682,
    clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0,
    reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 60},
    alloc = 0, size = 0, data = 0x4fd946e, clean = 0, simpletext = 0,
    righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}},
  d = 0x1, static codecForCStrings = 0x0}
        offers = {{p = {static shared_null = {ref = {_q_value = 10491},
        alloc = 0, begin = 0, end = 0, sharable = 1, array = {0x0}},
      d = 0x9ad150}, d = 0x9ad150}}

This bug affect me too, same reason, same crash.

*** This bug has been marked as a duplicate of bug 195462 ***