On Monday, I reported a panic during F7 installation on my system. The panics have shown up after installation too. I've reported this as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=242836 I'm pretty sure that this only shows up on systems with more than one processor or core. It may well only happen on AMD systems. Heck, it may only happen on my machine. Note: for most people, a panic will show up as a system freeze. The only way to see a panic is by having the text console visible when it happens. Most of the time, the console will not be visible because of running X. If you think you might be getting panics, do see my message of a couple of hours ago https://www.redhat.com/archives/fedora-list/2007-June/msg01499.html