I have upgraded from Linux Fedora Core 3 to Fedora Core 5. I still have to not configured it fully, so a complete review will have to wait.
I had a few troubles getting Firefox to work as I need it - and I have great difficulty in believing that they did not include XMMS in the distro. Other than that, I am mostly satisfied with the OS.
More details and a decent review will be posted when I have finished configuring the system.