Segfaults on macbook pro 5,1

[Gionn]

Binary package hint: upower

Check kernel.log, there are a lots of segfaults like:
[ 1517.391191] upowerd[2169]: segfault at 18 ip 00007f0658f55dfd sp 00007fff93a53300 error 4 in libc-2.11.1.so[7f0658ed8000+178000]

Don't know if could be correlated to the error, but the suspend to ram simply do anything (lock and power off the screen, but the suspend isn't triggered).

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: upower 0.9.1-1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: wl nvidia
Architecture: amd64
Date: Sun Apr 25 13:51:58 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 LANG=it_IT.utf8
 SHELL=/bin/bash
SourcePackage: upower

[Gionn (giovanni.toraldo)]

A reboot had helped, I will add more infos if occurs again.