gnome-screensaver-gl-helper crashed with SIGSEGV in exit()

Binary package hint: gnome-screensaver

Using the live cd. Netbookremix.
I installed the GL accelerator, but did not reboot.
Was watching a movie on youtube, and the screen started to blank out.
When I clicked on the screen, got this crash.
thanks for making ubuntu,
mike

ProblemType: Crash
Architecture: i386
Date: Thu Nov 5 20:09:21 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/lib/gnome-screensaver/gnome-screensaver-gl-helper
LiveMediaBuild: Ubuntu-Netbook-Remix 9.10 "Karmic Koala" - Release i386 (20091028.4)
NonfreeKernelModules: nvidia
Package: gnome-screensaver 2.28.0-0ubuntu3
ProcCmdline: /usr/lib/gnome-screensaver/gnome-screensaver-gl-helper
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SegvAnalysis:
 Segfault happened at: 0xd88f48: mov (%eax),%esi
 PC (0x00d88f48) ok
 source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-screensaver
StacktraceTop:
 ?? () from /usr/lib/libGL.so.1
 ?? () from /lib/tls/i686/cmov/libc.so.6
 exit () from /lib/tls/i686/cmov/libc.so.6
 __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
 ?? ()
Tags: ubuntu-unr
Title: gnome-screensaver-gl-helper crashed with SIGSEGV in exit()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare