compiz.real crashed with SIGSEGV

[Ton]

I.am new to ubuntu and do not know what compiz.real idoing

ProblemType: Crash
Architecture: i386
CrashCounter: 1
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/compiz.real
NonfreeKernelModules: nvidia
Package: compiz-core 1:0.7.8-0ubuntu2
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/compiz.real --ignore-desktop-hints --replace --loose-binding core ccp
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/real/RealPlayer
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: compiz
Stacktrace: #0 0x08055c0c in ?? ()
StacktraceTop: ?? ()
ThreadStacktrace:

Title: compiz.real crashed with SIGSEGV
Uname: Linux 2.6.27-7-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare