In a totally shocking turn of events, I over-used my operated arm and am back to typing one-handed again.
If anyone has managed to disable the touchpad while typing on a Dell XPS 1330 running latest Fedora 11, please comment. I apparently need to enable the SHMConfig option for the Synaptics driver in my xorg.conf, but the Synaptics driver won’t even load, and debugging this one-handed while I keep hitting the touchpad and moving the cursor to random spots in the window is an exercise in frustration (even more than usual for configuring X). I’ll be typing two-handed again by the time I get it working.
Update: Some clarifications: I use my laptop as a laptop – external mouse/keyboard not an option. I want to disable the touchpad only while I’m typing, but use it the rest of the time.