xbindkeys dies after using Fn+F2 to activate screensaver

[cviorel]

Binary package hint: xbindkeys

xbindkeys -v
displayName = :0
rc file = /home/cviorel/.xbindkeysrc
rc guile file = /home/cviorel/.xbindkeysrc.scm
getting rc guile file /home/cviorel/.xbindkeysrc.scm.
WARNING : /home/cviorel/.xbindkeysrc.scm not found or reading not allowed.
4 keys in /home/cviorel/.xbindkeysrc

min_keycode=8 max_keycode=255 (ie: know keycodes)
"amixer -q -c 0 set Master 5%- unmute"
    XF86AudioLowerVolume
"amixer -q -c 0 set Master 5%+ unmute"
    XF86AudioRaiseVolume
"amixer -q -c 0 set Master toggle"
    XF86AudioMute
"xlock"
    XF86ScreenSaver
starting loop...
Key press !
e.xkey.keycode=160
e.xkey.state=0
"xlock"
    XF86ScreenSaver
got screen 0 for window 15a
Start program with fork+exec call
Key release !
e.xkey.keycode=160
e.xkey.state=0
*** glibc detected *** xbindkeys: invalid fastbin entry (free): 0x087b9580 ***
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x6b961)[0x27c961]
/lib/i386-linux-gnu/libc.so.6(+0x6d28b)[0x27e28b]
/lib/i386-linux-gnu/libc.so.6(cfree+0x6d)[0x28141d]
/usr/lib/i386-linux-gnu/libxcb.so.1(+0x808a)[0xadc08a]
/usr/lib/i386-linux-gnu/libxcb.so.1(xcb_poll_for_event+0x86)[0xadd456]
/usr/lib/i386-linux-gnu/libX11.so.6(+0x36e32)[0x8b8e32]
/usr/lib/i386-linux-gnu/libX11.so.6(+0x37285)[0x8b9285]
/usr/lib/i386-linux-gnu/libX11.so.6(_XEventsQueued+0x6f)[0x8b97ff]
/usr/lib/i386-linux-gnu/libX11.so.6(XPending+0x68)[0x8aa558]
xbindkeys[0x8049b3a]
/usr/lib/libguile.so.12(scm_boot_guile+0x6b)[0x73bddb]
xbindkeys[0x804967d]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x227e37]
xbindkeys[0x8049571]
======= Memory map: ========
00110000-00117000 r-xp 00000000 08:02 4360 /usr/lib/libltdl.so.7.2.1
00117000-00118000 r--p 00006000 08:02 4360 /usr/lib/libltdl.so.7.2.1
00118000-00119000 rw-p 00007000 08:02 4360 /usr/lib/libltdl.so.7.2.1
0012b000-0014f000 r-xp 00000000 08:02 131845 /lib/i386-linux-gnu/libm-2.13.so
0014f000-00150000 r--p 00023000 08:02 131845 /lib/i386-linux-gnu/libm-2.13.so
00150000-00151000 rw-p 00024000 08:02 131845 /lib/i386-linux-gnu/libm-2.13.so
00157000-00173000 r-xp 00000000 08:02 131795 /lib/i386-linux-gnu/ld-2.13.so
00173000-00174000 r--p 0001b000 08:02 131795 /lib/i386-linux-gnu/ld-2.13.so
00174000-00175000 rw-p 0001c000 08:02 131795 /lib/i386-linux-gnu/ld-2.13.so
00210000-00211000 r-xp 00000000 00:00 0 [vdso]
00211000-0036b000 r-xp 00000000 08:02 131808 /lib/i386-linux-gnu/libc-2.13.so
0036b000-0036c000 ---p 0015a000 08:02 131808 /lib/i386-linux-gnu/libc-2.13.so
0036c000-0036e000 r--p 0015a000 08:02 131808 /lib/i386-linux-gnu/libc-2.13.so
0036e000-0036f000 rw-p 0015c000 08:02 131808 /lib/i386-linux-gnu/libc-2.13.so
0036f000-00372000 rw-p 00000000 00:00 0
0049c000-004b6000 r-xp 00000000 08:02 131836 /lib/i386-linux-gnu/libgcc_s.so.1
004b6000-004b7000 r--p 00019000 08:02 131836 /lib/i386-linux-gnu/libgcc_s.so.1
004b7000-004b8000 rw-p 0001a000 08:02 131836 /lib/i386-linux-gnu/libgcc_s.so.1
00626000-0062a000 r-xp 00000000 08:02 6575 /usr/lib/i386-linux-gnu/libXdmcp.so.6.0.0
0062a000-0062b000 r--p 00003000 08:02 6575 /usr/lib/i386-linux-gnu/libXdmcp.so.6.0.0
0062b000-0062c000 rw-p 00004000 08:02 6575 /usr/lib/i386-linux-gnu/libXdmcp.so.6.0.0
0062e000-0062f000 r-xp 00000000 08:02 15072 /usr/lib/libqthreads.so.12.3.1
0062f000-00630000 r--p 00000000 08:02 15072 /usr/lib/libqthreads.so.12.3.1
00630000-00631000 rw-p 00001000 08:02 15072 /usr/lib/libqthreads.so.12.3.1
006cd000-006cf000 r-xp 00000000 08:02 6567 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
006cf000-006d0000 r--p 00001000 08:02 6567 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
006d0000-006d1000 rw-p 00002000 08:02 6567 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
006f6000-00792000 r-xp 00000000 08:02 15077 /usr/lib/libguile.so.12.3.1
00792000-00794000 r--p 0009c000 08:02 15077 /usr/lib/libguile.so.12.3.1
00794000-00795000 rw-p 0009e000 08:02 15077 /usr/lib/libguile.so.12.3.1
00795000-0079b000 rw-p 00000000 00:00 0
00815000-00817000 r-xp 00000000 08:02 131818 /lib/i386-linux-gnu/libdl-2.13.so
00817000-00818000 r--p 00001000 08:02 131818 /lib/i386-linux-gnu/libdl-2.13.so
00818000-00819000 rw-p 00002000 08:02 131818 /lib/i386-linux-gnu/libdl-2.13.so
00882000-00998000 r-xp 00000000 08:02 6565 /usr/lib/i386-linux-gnu/libX11.so.6.3.0
00998000-00999000 ---p 00116000 08:02 6565 /usr/lib/i386-linux-gnu/libX11.so.6.3.0
00999000-0099a000 r--p 00116000 08:02 6565 /usr/lib/i386-linux-gnu/libX11.so.6.3.0
0099a000-0099c000 rw-p 00117000 08:02 6565 /usr/lib/i386-linux-gnu/libX11.so.6.3.0
0099c000-0099d000 rw-p 00000000 00:00 0
00a5e000-00a73000 r-xp 00000000 08:02 131873 /lib/i386-linux-gnu/libpthread-2.13.so
00a73000-00a74000 r--p 00015000 08:02 131873 /lib/i386-linux-gnu/libpthread-2.13.so
00a74000-00a75000 rw-p 00016000 08:02 131873 /lib/i386-linux-gnu/libpthread-2.13.so
00a75000-00a77000 rw-p 00000000 00:00 0
00ad4000-00aeb000 r-xp 00000000 08:02 6715 /usr/lib/i386-linux-gnu/libxcb.so.1.1.0
00aeb000-00aec000 r--p 00016000 08:02 6715 /usr/lib/i386-linux-gnu/libxcb.so.1.1.0
00aec000-00aed000 rw-p 00017000 08:02 6715 /usr/lib/i386-linux-gnu/libxcb.so.1.1.0
00d66000-00d67000 r-xp 00000000 08:02 15067 /usr/lib/libguile-ltdl.so.1.0.1
00d67000-00d68000 r--p 00000000 08:02 15067 /usr/lib/libguile-ltdl.so.1.0.1
00d68000-00d69000 rw-p 00001000 08:02 15067 /usr/lib/libguile-ltdl.so.1.0.1
00f1c000-00f24000 r-xp 00000000 08:02 131814 /lib/i386-linux-gnu/libcrypt-2.13.so
00f24000-00f25000 r--p 00007000 08:02 131814 /lib/i386-linux-gnu/libcrypt-2.13.so
00f25000-00f26000 rw-p 00008000 08:02 131814 /lib/i386-linux-gnu/libcrypt-2.13.so
00f26000-00f4d000 rw-p 00000000 00:00 0
08048000-08052000 r-xp 00000000 08:02 15091 /usr/bin/xbindkeys
08052000-08053000 r--p 00009000 08:02 15091 /usr/bin/xbindkeys
08053000-08054000 rw-p 0000a000 08:02 15091 /usr/bin/xbindkeys
08753000-087c5000 rw-p 00000000 00:00 0 [heap]
b7600000-b7621000 rw-p 00000000 00:00 0
b7621000-b7700000 ---p 00000000 00:00 0
b773a000-b778c000 rw-p 00000000 00:00 0
b77a1000-b77a4000 rw-p 00000000 00:00 0
bfbac000-bfbcb000 rwxp 00000000 00:00 0 [stack]
bfbcb000-bfbcd000 rw-p 00000000 00:00 0
Aborted

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xbindkeys 1.8.3-1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Jun 14 13:00:59 2011
ExecutablePath: /usr/bin/xbindkeys
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US.UTF-8
 LC_CTYPE=en_US.UTF-8
SourcePackage: xbindkeys
UpgradeStatus: No upgrade log present (probably fresh install)