My regular desktop is quite anemic: since it's always on and I don't need much processing power for my day-to-day usage, I use Calcifer, a small Atom-powered nettop. Works like a charm, but things like full HD streams are too much for the little guy to process. So this Friday, I brought home my work laptop (which is a high-powered, modern machine) and downloaded the Artist-X live DVD. It booted fine, and I started up Cinelerra to start editing my videos.
Unfortunately, even the laptop had trouble decoding the video (probably an issue where the hardware rendering of the GPU couldn't be activated through the driver), and Cinelerra can't produce video with the correct resolution. I tried KDEnlive for a bit, but wasn't enthused either.
And then I found out that YouTube has a video editor. You can combine multiple clips into one project, cut out unwanted parts, add some effects, etc. Surely not a full editing suite, but I don't need one anyway. And YouTube videos play smooth (though not HD) on Calcifer! So I uploaded all my clips as private videos, and then combined them into one project, which is now being processed. Afterwards, I'll just delete the constituent clips.
Very easy to use, intuitive interface, works in the browser, and works good on Calcifer. And I want my videos to turn up on YouTube anyway, so next time I'll go straight for their editor.