I build gksu_1.3.2-3 following instructions on http://wiki.debian.net/?HowToGetABacktrace
and here is the backtrace: [EMAIL PROTECTED]:~/download/debian]$ MALLOC_CHECK_=2 gdb /usr/bin/gksu 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 "i386-linux"...Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1". (gdb) set pagination 0 (gdb) run -u root /usr/sbin/synaptic Starting program: /usr/bin/gksu -u root /usr/sbin/synaptic [Thread debugging using libthread_db enabled] [New Thread -1217648960 (LWP 25825)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1217648960 (LWP 25825)] 0x0804ca9e in main (argc=4, argv=0xbfa7f284) at gksu.c:1097 1097 if (!strcmp (tmp, "default")) (gdb) bt #0 0x0804ca9e in main (argc=4, argv=0xbfa7f284) at gksu.c:1097 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]