Comment 2 for bug 554178

It seems to prevent sending my notebook (Dell Latitude D830) to sleep via the sleep button on my keyboard (XF86Sleep) - running acpid -d gives me the output
cat: /var/lib/acpi-support/system-manufacturer: No such file or directory
cat: /var/lib/acpi-support/system-product-name: No such file or directory
cat: /var/lib/acpi-support/system-version: No such file or directory
cat: /var/lib/acpi-support/bios-version: No such file or directory
at every press of this button but no reaction follows. Using the Suspend command from the menu works, as well as calling org.freedesktop.UPower.Suspend via dbus.