kdeinit4 crashed with signal 7 in KPixmapCache::Private::mmapFile()

[IDWMaster]

The operating system advised me to report this bug. It automatically uploaded a report as well. I was using Alien Arena at the time this happened. I am using Kubuntu version 9.10

ProblemType: Crash
Architecture: i386
Date: Sat Sep 12 20:37:53 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/kdeinit4
NonfreeKernelModules: wl
Package: kdelibs-bin 4:4.3.1-0ubuntu2
ProcCmdline: kdeinit4:\ krunner\ [kdeinit]
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.32-generic
Signal: 7
SourcePackage: kde4libs
StacktraceTop:
 KPixmapCache::Private::mmapFile(QString const&, KPixmapCache::Private::MmapInfo*, int) () from /usr/lib/libkdeui.so.5
 KPixmapCache::Private::mmapFiles() ()
 KPixmapCache::Private::init() () from /usr/lib/libkdeui.so.5
 KPixmapCache::discard() () from /usr/lib/libkdeui.so.5
 KPixmapCache::deleteCache(QString const&) ()
Title: kdeinit4 crashed with signal 7 in KPixmapCache::Private::mmapFile()
Uname: Linux 2.6.31-10-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[IDWMaster (webadm)]

I often have this problem while running OpenGL applications with desktop compositioning.