Yesterday my wrist was in a lot of pain, and started swelling. I put it on ice and started looking for a new keyboard. It is so obvious that the strain from pressing enter with my right pinky, as well as reaching for the mouse, is too much.
Jason pointed out this deal on the Microsoft Natural Ergonomic Keyboard 4000. $28 bucks with shipping, so I am gonna try that. I am also looking at the Wacom Bamboo tablets to replace my mouse. After using mobile devices with touchscreens, it seems silly to clutch and press a chunk of plastic.
I will report back how well these work with GNU/Linux/GNOME.