Ubuntu upgrades always, always, always fuck up the same things: network connections and graphics drivers. Without fail, if you upgrade, your wireless connection won't work and any closed-source video card drivers you need will get ill. 8.10 Intrepid Ibex is no exception.
I figured out how to get my wireless connection back, but the NVidia drivers are still a mystery. I don't care about free software idealism, I care that my shit works. I'm willing to jump through minor hoops to make it work, like Ubuntu's "restricted drivers" lecture, but now that doesn't even work:
Why is this such a pain in the balls? I press the activate button and nothing happens. AWESOME. Just because I'm used to wasting hours fixing things like this doesn't mean I enjoy it.
NVidia has 70-ish percent market share of all GPUs. If your shit doesn't work out of the box on 70% of the graphics cards out there, who has failed?
[Update, the next day]: I found the fix. Navigate to System > Administration > Synaptic Package Manager. From there, go to Settings > Repositories. In the "Ubuntu Software" tab, check the "Proprietary device drivers" box. Or edit /etc/apt/sources.list if you want to show your chest hair.
I'm glad to see that passive-aggressive Debian superiority is alive and well.