:~$ *** glibc detected *** xterm: munmap_chunk(): invalid pointer: 0x0809fc44 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(__libc_free+0x18a)[0xb7c92b4a]
xterm[0x805f946]
xterm[0x8052b89]
/usr/lib/libXt.so.6[0xb7eb2dc2]
/usr/lib/libXt.so.6[0xb7eb2f48]
/usr/lib/libXt.so.6(XtRealizeWidget+0x9d)[0xb7eb31d9]
xterm[0x8054790]
xterm[0x8062e00]
xterm[0x8064fa2]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7c418cc]
xterm[0x804d231]
======= Memory map: ========
08048000-0808a000 r-xp 00000000 08:03 721599     /usr/bin/xterm
0808a000-0808f000 rw-p 00042000 08:03 721599     /usr/bin/xterm
0808f000-080d3000 rw-p 0808f000 00:00 0          [heap]
b7a2d000-b7a37000 r-xp 00000000 08:03 212621     /lib/libgcc_s.so.1
b7a37000-b7a38000 rw-p 00009000 08:03 212621     /lib/libgcc_s.so.1
b7a3e000-b7a42000 r-xp 00000000 08:03 725908     /usr/lib/libXfixes.so.3.1.0
b7a42000-b7a43000 rw-p 00003000 08:03 725908     /usr/lib/libXfixes.so.3.1.0
b7a43000-b7a4b000 r-xp 00000000 08:03 725910     /usr/lib/libXcursor.so.1.0.2
b7a4b000-b7a4c000 rw-p 00007000 08:03 725910     /usr/lib/libXcursor.so.1.0.2
b7a4c000-b7a4d000 r-xp 00000000 08:03 819686     /usr/lib/X11/locale/common/xlcUTF8Load.so.2.0.0
b7a4d000-b7a4e000 rw-p 00000000 08:03 819686     /usr/lib/X11/locale/common/xlcUTF8Load.so.2.0.0
b7a4e000-b7a81000 r--p 00000000 08:03 752712     /usr/lib/locale/en_US.utf8/LC_CTYPE
b7a81000-b7a82000 r--p 00000000 08:03 752713     /usr/lib/locale/en_US.utf8/LC_NUMERIC
b7a82000-b7a83000 r--p 00000000 08:03 752714     /usr/lib/locale/en_US.utf8/LC_TIME
b7a83000-b7b5a000 r--p 00000000 08:03 752715     /usr/lib/locale/en_US.utf8/LC_COLLATE
b7b5a000-b7b5b000 r--p 00000000 08:03 752716     /usr/lib/locale/en_US.utf8/LC_MONETARY
b7b5b000-b7b5c000 r--p 00000000 08:03 752949     /usr/lib/locale/en_US.utf8/LC_MESSAGES/SYS_LC_MESSAGES
b7b5c000-b7b5d000 r--p 00000000 08:03 752950     /usr/lib/locale/en_US.utf8/LC_PAPER
b7b5d000-b7b5e000 r--p 00000000 08:03 752951     /usr/lib/locale/en_US.utf8/LC_NAME
b7b5e000-b7b5f000 r--p 00000000 08:03 752952     /usr/lib/locale/en_US.utf8/LC_ADDRESS
b7b5f000-b7b60000 r--p 00000000 08:03 752953     /usr/lib/locale/en_US.utf8/LC_TELEPHONE
b7b60000-b7b61000 r--p 00000000 08:03 752954     /usr/lib/locale/en_US.utf8/LC_MEASUREMENT
b7b61000-b7b68000 r--s 00000000 08:03 720385     /usr/lib/gconv/gconv-modules.cache
b7b68000-b7b69000 r--p 00000000 08:03 752982     /usr/lib/locale/en_US.utf8/LC_IDENTIFICATION
b7b69000-b7b6b000 rw-p b7b69000 00:00 0 
b7b6b000-b7b6d000 r-xp 00000000 08:03 212602     /lib/tls/i686/cmov/libdl-2.4.so
b7b6d000-b7b6f000 rw-p 00001000 08:03 212602     /lib/tls/i686/cmov/libdl-2.4.so
b7b6f000-b7b73000 r-xp 00000000 08:03 719811     /usr/lib/libXdmcp.so.6.0.0
b7b73000-b7b74000 rw-p 00003000 08:03 719811     /usr/lib/libXdmcp.so.6.0.0