Well, thought I'd relay my experience doing the upgrade, just another data point for other folks to consider. Things are almost back to 100% right now (total number of hours spent solving hickups so far: about 1.5 to 2). ** Main problem: the upgrade generated initrd file wasn't appropriate (it seems). Relevant rig info: AMD x86_64 (3500+), 2 SATA HDs, raid 0. Disclaimer: full back up made before upgrade. The upgrade process (package selection etc.) was simple and intutive, no surprises here. The problem: upon rebooting, the kernel panicked: something like: "/dev/md1 did not appear" or somesuch (I know I should have written it down, but it was 3am, I was tired and didn't think it would be important). My partition scheme: /dev/sda1 mounted as /boot (ext2, bootable) /dev/sda2 and /dev/sdb1 as swap (/dev/md0) /dev/sda3 and /dev/sdb2 as / (/dev/md1) Starting the DVD in rescue mode, and after fsck'ing everything, mounted and chrooted into the partitions, and run mkinitrd -u=no udev. Reboot. Now the system did find the raid, but this time it panicked with: "run-init: file not found" (I'm pretty sure it said almost exacly that). Another reboot with the DVD, chroot, and this time run: "mkinitrd -uR" ("use initrd instead of initramfs"). This time it booted up and everything seems ok. A few glitches here and there (the most serious is with the sound: I can't seem to remove the old sound card from yast2 sound, so I can run config on it again; maybe I'll start another thread on that). So, the negative side: a few fairly serious (IMO) glitches seemingly related to mkinitrd. The positives: Once I manage to get the system to reboot, everything else seems to be working fine, altough I haven't have the time to look closely. I run a simple web site from my machine, just for relatives and friends to see our family pictures and things like that. Using wordpress and gallery, both of which rely on mysql to keep users, usage, etc. The site was up an running upon reboot, no troubleshooting whatsoever necessary. That pleasantly surprised me. Hope this info is useful to someone. Cheers, Adalberto