corrupted double-linked list?

[xpol]

Launching a script (from zsh) that simply starts the rxvt terminal emulation
and executes vim from there, i got the apparently serious message, here
included. 
I wasn't able to reproduce that behaviour. Yet i think it would be important
to figure out what might be the origin.
Any ideas?

Thank you 

--
Pol

--- enc  
*** glibc detected *** zsh: corrupted double-linked list: 0x0814de28 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb7d7537d]
/lib/tls/i686/cmov/libc.so.6[0xb7d771bd]
/lib/tls/i686/cmov/libc.so.6(__libc_malloc+0x90)[0xb7d78fc0]
zsh(zalloc+0x24)[0x808a624]
zsh[0x8098577]
zsh(parse_event+0x2e)[0x809d76e]
zsh(loop+0x5a)[0x807c87a]
zsh(zsh_main+0x1e4)[0x807d594]
zsh(main+0x22)[0x8054872]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0xb7d23050]
zsh[0x80547e1]
======= Memory map: ========
08048000-080c1000 r-xp 00000000 08:0b 18227      /bin/zsh4
080c1000-080c4000 rw-p 00079000 08:0b 18227      /bin/zsh4
080c4000-0819e000 rw-p 080c4000 00:00 0          [heap]
b7900000-b7921000 rw-p b7900000 00:00 0
b7921000-b7a00000 ---p b7921000 00:00 0
b7ab6000-b7ac0000 r-xp 00000000 08:0b 156625     /lib/libgcc_s.so.1
b7ac0000-b7ac1000 rw-p 0000a000 08:0b 156625     /lib/libgcc_s.so.1
b7adf000-b7b15000 rw-p b7adf000 00:00 0
b7b15000-b7b23000 r-xp 00000000 08:08
962660     /usr/lib/zsh/4.3.4/zsh/computil.so
b7b23000-b7b24000 rw-p 0000d000 08:08
962660     /usr/lib/zsh/4.3.4/zsh/computil.so
b7b25000-b7b28000 rw-p b7b25000 00:00 0
b7b28000-b7b2e000 r-xp 00000000 08:08
962639     /usr/lib/zsh/4.3.4/zsh/parameter.so
b7b2e000-b7b2f000 rw-p 00006000 08:08
962639     /usr/lib/zsh/4.3.4/zsh/parameter.so
b7b2f000-b7b35000 r-xp 00000000 08:08
962652     /usr/lib/zsh/4.3.4/zsh/zutil.so
b7b35000-b7b36000 rw-p 00005000 08:08
962652     /usr/lib/zsh/4.3.4/zsh/zutil.so
b7b36000-b7b53000 r-xp 00000000 08:08
962658     /usr/lib/zsh/4.3.4/zsh/complete.so
b7b53000-b7b54000 rw-p 0001d000 08:08
962658     /usr/lib/zsh/4.3.4/zsh/complete.so
b7b54000-b7b81000 r-xp 00000000 08:08
962662     /usr/lib/zsh/4.3.4/zsh/zle.so
b7b81000-b7b86000 rw-p 0002d000 08:08
962662     /usr/lib/zsh/4.3.4/zsh/zle.so
b7b86000-b7bc5000 r--p 00000000 08:08
666880     /usr/lib/locale/en_US.utf8/LC_CTYPE
b7bc5000-b7ca5000 r--p 00000000 08:08
667053     /usr/lib/locale/en_US.utf8/LC_COLLATE
b7ca5000-b7cae000 r-xp 00000000 08:0b
44381      /lib/tls/i686/cmov/libnss_files-2.6.1.so
b7cae000-b7cb0000 rw-p 00008000 08:0b
44381      /lib/tls/i686/cmov/libnss_files-2.6.1.so
b7cb0000-b7cb7000 r-xp 00000000 08:0b
44379      /lib/tls/i686/cmov/libnss_compat-2.6.1.so
b7cb7000-b7cb9000 rw-p 00006000 08:0b
44379      /lib/tls/i686/cmov/libnss_compat-2.6.1.so
b7cba000-b7cbd000 r-xp 00000000 08:08
962628     /usr/lib/zsh/4.3.4/zsh/rlimits.so
b7cbd000-b7cbe000 rw-p 00002000 08:08
962628     /usr/lib/zsh/4.3.4/zsh/rlimits.so
b7cbe000-b7cc0000 r-xp 00000000 08:08
962647     /usr/lib/zsh/4.3.4/zsh/terminfo.so
b7cc0000-b7cc1000 rw-p 00001000 08:08
962647     /usr/lib/zsh/4.3.4/zsh/terminfo.so
b7cc2000-b7cc3000 r--p 00000000 08:08
667822     /usr/lib/locale/en_US.utf8/LC_NUMERIC
b7cc3000-b7cc4000 r--p 00000000 08:08
667691     /usr/lib/locale/en_US.utf8/LC_TIME
b7cc4000-b7cc5000 r--p 00000000 08:08
667692     /usr/lib/locale/en_US.utf8/LC_MONETARY
b7cc5000-b7cc6000 r--p 00000000 08:08
667827     /usr/lib/locale/en_US.utf8/LC_MESSAGES/SY
S_LC_MESSAGES
b7cc6000-b7cc7000 r--p 00000000 08:08
668591     /usr/lib/locale/en_US.utf8/LC_PAPER
b7cc7000-b7cc8000 r--p 00000000 08:08
669136     /usr/lib/locale/en_US.utf8/LC_NAME
b7cc8000-b7cc9000 r--p 00000000 08:08
667695     /usr/lib/locale/en_US.utf8/LC_ADDRESS
b7cc9000-b7cca000 r--p 00000000 08:08
667696     /usr/lib/locale/en_US.utf8/LC_TELEPHONE
b7cca000-b7ccb000 r--p 00000000 08:08
667697     /usr/lib/locale/en_US.utf8/LC_MEASUREMENT
b7ccb000-b7ccc000 r--p 00000000 08:08
667698     /usr/lib/locale/en_US.utf8/LC_IDENTIFICAT
ION
b7ccc000-b7ccd000 r-xp 00000000 08:08 784065     /usr/lib/gconv/ISO8859-1.so
b7ccd000-b7ccf000 rw-p 00000000 08:08 784065     /usr/lib/gconv/ISO8859-1.so
b7ccf000-b7cd6000 r--s 00000000 08:08
617812     /usr/lib/gconv/gconv-modules.cache
b7cd6000-b7d0c000 r--p 00000000 08:08
764667     /usr/lib/locale/en_US/LC_CTYPE
b7d0c000-b7d0d000 rw-p b7d0c000 00:00 0
b7d0d000-b7e51000 r-xp 00000000 08:0b
44228      /lib/tls/i686/cmov/libc-2.6.1.so
b7e51000-b7e52000 r--p 00143000 08:0b
44228      /lib/tls/i686/cmov/libc-2.6.1.so
b7e52000-b7e%                                                                     
------------------