I found http://wiki.debian.net/?HowToGetABacktrace and did a backtrace.
------------------------------------------- # MALLOC_CHECK_=2 gdb synaptic GNU gdb 6.3-debian Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "powerpc-linux"...Using host libthread_db library "/lib/libthread_db.so.1". (gdb) set pagination 0 (gdb) run synaptic Starting program: /usr/sbin/synaptic synaptic [Thread debugging using libthread_db enabled] [New Thread 16384 (LWP 19642)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 16384 (LWP 19642)] 0x0ef99f38 in _wordcopy_fwd_aligned () from /lib/libc.so.6 (gdb) bt #0 0x0ef99f38 in _wordcopy_fwd_aligned () from /lib/libc.so.6 #1 0x0ef99e48 in memcpy () from /lib/libc.so.6 #2 0x0eb458f8 in std::string::_S_copy_chars () from /usr/lib/libstdc ++.so.5 #3 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #4 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #5 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #6 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #7 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #8 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #9 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #10 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #11 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #12 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #13 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #14 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #15 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #16 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #17 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #18 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #19 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #20 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #21 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #22 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #23 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #24 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #25 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #26 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #27 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #28 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #29 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #30 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #31 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #32 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #33 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #34 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #35 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #36 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #37 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #38 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #39 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #40 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #41 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #42 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #43 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #44 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #45 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #46 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #47 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #48 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #49 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #50 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #51 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #52 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #53 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #54 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #55 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #56 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #57 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #58 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #59 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #60 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #61 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #62 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #63 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #64 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #65 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #66 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 #67 0x0eb49e5c in std::string::_M_replace_safe<__gnu_cxx::__normal_iterator<char*, std::string> > () from /usr/lib/libstdc++.so.5 Previous frame inner to this frame (corrupt stack?) 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