compiz.real crashed with SIGSEGV

[exactt]

Binary package hint: compiz

this crash report just came up after restarting the computer. here on hardy alpha 5. don't know if it is of any use and maybe a duplicate...

ProblemType: Crash
Architecture: i386
Date: Wed Mar 5 12:51:06 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/compiz.real
NonfreeKernelModules: nvidia
Package: compiz-core 1:0.7.0+git20080227-0ubuntu2
PackageArchitecture: i386
ProcCmdline: /usr/bin/compiz.real --ignore-desktop-hints --replace --loose-binding --sm-client-id default0 ccp
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: compiz
Stacktrace:
 #0 0x08055aed in ?? ()
 #1 0x0807ba40 in ?? ()
 #2 0x00000003 in ?? ()
 #3 0x00000068 in ?? ()
 #4 0x00000000 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: compiz.real crashed with SIGSEGV
Uname: Linux 2.6.24-11-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin plugdev video