I just acquired an Asus a8v deluxe and amd64 3500+ cpu and have a couple of observations about fc2 x86_64. I was pleased to find that the sk98lin driver was up to date and worked with the onboard ethernet interface. Mozilla doesn't want to recognize/use any macromedia flash plugin I can find. I tried rebuilding the rpm on from dag, downloading from the macromedia site, and using the existing files I already had. When I view the about:plugins page all I see is the default libnullplugin.so even though the flash files are there also. One bugzilla entry seemed to indicate compat-libstd files might be requred, but I have all of those installed. dvd burning also seems to be an issue. dvdrecord gives me an invalid media error. The man pages seem to indicate that dvd-r media should be supported though. Again, I've tried a number of things suggested by research. One bugzilla entry says autofs and/or magicdev could be a problem but removing both doesn't seem to help. I've tried dvdrecord and ProDVD directly from Jorg's site with no success in either case. Nautilus-cd-burner help says I should be able to right-click on a file and select Write to CD to make an image from an iso. However, when I do this, the "Write to CD" menu item appears briefly on the menu, but quickly disappears. I had the i386 version of FC2 installed on this system and it worked "out of the box" for both of the above issues. One thing that surprised me was kernel compiling. Compiling a kernel went from 6:11 on the i386 version of FC2, but went up to 6:28 on the x86_64 version.