Comment 20 for bug 443318

Change to acpi package is based on this email on the linux kernel mailing list: http://osdir.com/ml/linux-kernel/2009-09/msg02022.html

The bug reported there is very similar to this one, so is the logging in /var/log/messages (see message #12). The one difference is i get this problem nearly daily so for me it's not very rare.