compiz crashed with SIGSEGV in g_type_check_instance_is_a()

[Joe Archer]

no visible effect just crash report

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: libnux-1.0-0 1.0.8-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-8.10-generic 3.0.1
Uname: Linux 3.0.0-8-generic i686
Architecture: i386
Date: Wed Aug 10 13:56:32 2011
ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x658ff6 <g_type_check_instance_is_a+230>: mov 0x0(%ebp),%eax
 PC (0x00658ff6) ok
 source "0x0(%ebp)" (0xffffd000) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 g_type_check_instance_is_a () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_volume_get_mount () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
 unity::DeviceLauncherIcon::ActivateLauncherIcon(ActionArg) () from /usr/lib/compiz/libunityshell.so
 LauncherIcon::Activate(ActionArg) () from /usr/lib/compiz/libunityshell.so
 LauncherIcon::RecvMouseClick(int) () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in g_type_check_instance_is_a()
UpgradeStatus: Upgraded to oneiric on 2011-08-10 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 type_node_check_conformities_UorL (have_lock=0, support_prerequisites=0, support_interfaces=1, iface_node=0x9f54b94, node=0xa0ec220) at /build/buildd/glib2.0-2.29.16/./gobject/gtype.c:3421
 type_node_conforms_to_U (support_prerequisites=0, support_interfaces=1, iface_node=0x9f54b94, node=0xa0ec220) at /build/buildd/glib2.0-2.29.16/./gobject/gtype.c:3466
 g_type_check_instance_is_a (type_instance=0xa2de520, iface_type=168739360) at /build/buildd/glib2.0-2.29.16/./gobject/gtype.c:3952
 g_zlib_compressor_set_gzheader (compressor=0xa2de520) at /build/buildd/glib2.0-2.29.16/./gio/gzlibcompressor.c:94
 g_zlib_compressor_set_gzheader (compressor=0xa2de520) at /build/buildd/glib2.0-2.29.16/./gio/gzlibcompressor.c:73

[Omer Akram (om26er)]

This bug was reported on a development snapshot of Unity but lacks elements for it to be actionable:
- there seems to be no reports of further occurences of the issue
- the bug cannot be reproduced reliably
- the information provided is not sufficient to track down the issue to a particular programming error.
Could you please check if this issue is present in the current version, and if it is reopen the bug to a NEW status.