thebrain runs Gentoo Linux. When I upgraded the packages database, it told me that the profile I had been using was obsolete and would be removed in the future. I switched to the new profile, ran
emerge system, and waited. That rebuilt 61 packages, and took about 6 hours. I spent another 30 minutes going through the various configuration files it wanted to upgrade, applying most updates, rejecting a few, merging in customizations to a few more.
Then, it was time to reboot. The system had been up for 117 days and 12 hours by that point. It came down cleanly, but didn't come up the first time: it hung early in the initialization process. I cursed, and rebooted it in single-user mode, which came up fine. I rebooted it again in multiuser mode, and it came up fine again. I'm a bit nervous about that, but if it won't fail, it's kinda hard to fix.
I'll wait till I get back from Penguicon to copy the installation over to my backup hard disk. Right now, I'd rather have it to fall back on.