Seems like this is a bug with the latest Kernels
Here is an e-mail I received form a Linux guru.
You can also chek out his web site that has a lot of good tutorials for Fedora Core 4
http://stanton-finley.net/fedora_cor...ion_notes.html
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There is a known bug in recent kernels (since kernel
2.6.11-1.13.1369_FC4) that locks up many systems when you insert a DVD.
See
https://bugzilla.redhat.com/bugzilla...cgi?id=162347. The
solution will be to either revert to kernel 2.6.11-1.13.1369_FC4 or wait
until a kernel is released as an update that fixes this problem.
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If you have not removed the original kernel you should be able to select
it on your boot menu. Otherwise you would have to reinstall. What I did
was install the most recent kernel from Fedora testing and it seems to
work. My DVDs play. Go to
http://download.fedora.redhat.com/pu...esting/4/i386/
and download kernel-2.6.12-1.1394_FC4.i686.rpm,
kernel-devel-2.6.12-1.1394_FC4.i686.rpm, and
kernel-doc-2.6.12-1.1394_FC4.noarch.rpm. Drag them from your desktop
into your home folder. Do "su", password, and then "rpm -ivh *.rpm". You
can remove the other kernels if you wish by following
http://fedoranews.org/tchung/yum-remove/ (It works for FC4 as well as FC3).
Above statements and help info were provided by Stanton Finley =)