compiz crashed with SIGSEGV in nux::GpuDevice::GetGpuInfo()

[Candra Emil]

this happened right after I reset compiz settings to default in preferences

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.44-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CrashCounter: 1
Date: Sat Apr 16 13:08:09 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x6c32cb7 <_ZN3nux9GpuDevice10GetGpuInfoEv+7>: mov 0x70(%eax),%eax
 PC (0x06c32cb7) ok
 source "0x70(%eax)" (0x00000070) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 nux::GpuDevice::GetGpuInfo() () from /usr/lib/libnux-graphics-0.9.so.0
 nux::GpuDevice::CreateSystemCapableTexture() () from /usr/lib/libnux-graphics-0.9.so.0
 PanelMenuView::Refresh() () from /usr/lib/compiz/libunityshell.so
 PanelMenuView::OnActiveWindowChanged(_BamfView*, _BamfView*) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in nux::GpuDevice::GetGpuInfo()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 nux::GpuDevice::GetGpuInfo (this=0x0) at ./GpuDevice.cpp:715
 nux::GpuDevice::CreateSystemCapableTexture (this=0x0) at ./GpuDevice.cpp:985
 PanelMenuView::Refresh (this=0x9939080) at /build/buildd/unity-3.8.8/src/PanelMenuView.cpp:614
 PanelMenuView::OnActiveWindowChanged (this=0x9939080, old_view=0x0, new_view=0x99bf1a8) at /build/buildd/unity-3.8.8/src/PanelMenuView.cpp:781
 on_active_window_changed (matcher=0x98993c0, old_view=0x0, new_view=0x99bf1a8, self=0x9939080) at /build/buildd/unity-3.8.8/src/PanelMenuView.cpp:1039