Comment 60 for bug 626622

I'm using natty and acpi=off do the trick! Searching for a better way to resolve the question (less agressive) I found some posts who add problems with fail to load on Asus laptop (mine X71SL).

https://bugzilla.redhat.com/show_bug.cgi?id=506573

http://forums.fedoraforum.org/showthread.php?t=227616

instead of acpi=off I tried the pci=nomsi and it worked like a charm.