Not enough info, so no point
For my PC
Fedora 15 update fails
Fedora 15 install CD fails to boot
Fedora 15 Live KDE fails to boot
All fail to finish initialising hardware.
smolt page :
http://www.smolts.org/client/show/pub_4917245b-ea15-44b1-ae4d-788c70a5a3d9
Result : I shall not be updating to Fedora 15 any time soon
I provide this information reluctantly based on my previous experience
posting to this community, which laughingly suggests it provides
assistance, encouragement, and advice.