Bug 148500

Version:           2.1 (using KDE 3.5.6, Kubuntu (feisty) 4:3.5.6-0ubuntu14)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.20-16-generic

at the beginning, I thought ktorrent crash because it was loading a file. But it is crashing also whith no activity at all. With one or more files loading, without activity: at any time, it can crash. I can't remark any regularity in the crash.
Here is the debug report:

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1235097904 (LWP 5683)]
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[KCrash handler]
#6  0xb7e79bcb in dht::ParseRsp () from /usr/lib/libktorrent-2.1.so
#7  0xb7e79df2 in dht::MakeRPCMsg () from /usr/lib/libktorrent-2.1.so
#8  0xb7e6ef51 in dht::RPCServer::readPacket ()
   from /usr/lib/libktorrent-2.1.so
#9  0xb7e6f252 in dht::RPCServer::qt_invoke ()
   from /usr/lib/libktorrent-2.1.so
#10 0xb6eb388b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#11 0xb6eb4330 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#12 0xb763d04c in KNetwork::KClientSocketBase::readyRead ()
   from /usr/lib/libkdecore.so.4
#13 0xb763d086 in KNetwork::KClientSocketBase::slotReadActivity ()
   from /usr/lib/libkdecore.so.4
#14 0xb764f143 in KNetwork::KClientSocketBase::qt_invoke ()
   from /usr/lib/libkdecore.so.4
#15 0xb764f1e6 in KNetwork::KDatagramSocket::qt_invoke ()
   from /usr/lib/libkdecore.so.4
#16 0xb6eb388b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0xb6eb41a2 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#18 0xb7240877 in QAuServer::qt_property () from /usr/lib/libqt-mt.so.3
#19 0x08333658 in ?? ()
#20 0x00000002 in ?? ()
#21 0x0000000e in ?? ()
#22 0x00000000 in ?? ()