gedit crashed with SIGSEGV in show_thumb_cb()

[Nicholas Skaggs]

I attempted to drag and drop a file onto gedit from nautilus. When I do, this occasionally happens

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: overlay-scrollbar 0.2.15-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.92-0ubuntu1
Architecture: amd64
CheckboxSubmission: 41733012f282e0b91a263998ebc59472
CheckboxSystem: 4ed15c40009aa6f7770f606350a390a2
CrashCounter: 1
Date: Thu Feb 23 00:41:00 2012
ExecutablePath: /usr/bin/gedit
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcCmdline: gedit /home/username/projects/checkbox/checkbox-beta1/examples/checkbox-beta1.ini
SegvAnalysis:
 Segfault happened at: 0x7f73be3e29f8: mov 0xb0(%rbx),%ecx
 PC (0x7f73be3e29f8) ok
 source "0xb0(%rbx)" (0xaaaaaaaaaaaaab5a) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: overlay-scrollbar
StacktraceTop:
 ?? () from /usr/lib/liboverlay-scrollbar3-0.2.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gedit crashed with SIGSEGV in g_main_context_dispatch()
UpgradeStatus: Upgraded to precise on 2012-01-16 (38 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 show_thumb_cb (user_data=<optimized out>) at /build/buildd/overlay-scrollbar-0.2.15/./os/os-scrollbar.c:2685
 g_timeout_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.31.18/./glib/gmain.c:3854
 g_main_dispatch (context=0x1223ea0) at /build/buildd/glib2.0-2.31.18/./glib/gmain.c:2510
 g_main_context_dispatch (context=0x1223ea0) at /build/buildd/glib2.0-2.31.18/./glib/gmain.c:3047
 g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1223ea0, self=<optimized out>) at /build/buildd/glib2.0-2.31.18/./glib/gmain.c:3118