yelp crashed with SIGSEGV in g_type_check_instance_cast()

Was testing Help Application in 11.10,Sadly,Browsing it and clicking on a link on Unity help page caused this.
I found out that bug #719427 can be a duplicate of this bug,but caused using Firefox,but that bug is marked as incomplete,and filer was asked to reproduce it in 11.10,so here is the bug reproduced in new version,
Please feel free to merge this bug with the original one if its required,I don't know how to do it

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: yelp 3.1.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Wed Sep 7 20:17:49 2011
ExecutablePath: /usr/bin/yelp
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901)
ProcCmdline: yelp
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x68a908 <g_type_check_instance_cast+56>: mov (%eax),%ebp
 PC (0x0068a908) ok
 source "(%eax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%ebp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: yelp
StacktraceTop:
 g_type_check_instance_cast () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: yelp crashed with SIGSEGV in g_type_check_instance_cast()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare